Home / 80,260,232,407.60-120,387,621,985.55-20,569,480,789.72

Finding the Fourth Proportional to 80,260,232,407.60, 120,387,621,985.55 and 20,569,480,789.72

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Solution

The fourth proportional to 80,260,232,407.60, 120,387,621,985.55 and 20,569,480,789.72 is: 30,853,522,391.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,260,232,407.60 : 120,387,621,985.55 = 20,569,480,789.72 : x
  2. Step 2: Convert to fraction form
    80,260,232,407.60/120,387,621,985.55 = 20,569,480,789.72/x
  3. Step 3: Cross multiply
    80,260,232,407.60x = 120,387,621,985.55 × 20,569,480,789.72
  4. Step 4: Simplify right side
    80,260,232,407.60x = 2,476,310,877,751,844,274,176
  5. Step 5: Solve for x
    x = 2,476,310,877,751,844,274,176/80,260,232,407.60
  6. Step 6: Final answer
    x = 30,853,522,391.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.