Home / 80,730.01-121,095.63-28,139.55

Finding the Fourth Proportional to 80,730.01, 121,095.63 and 28,139.55

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Solution

The fourth proportional to 80,730.01, 121,095.63 and 28,139.55 is: 42,209.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,730.01 : 121,095.63 = 28,139.55 : x
  2. Step 2: Convert to fraction form
    80,730.01/121,095.63 = 28,139.55/x
  3. Step 3: Cross multiply
    80,730.01x = 121,095.63 × 28,139.55
  4. Step 4: Simplify right side
    80,730.01x = 3,407,575,788.99
  5. Step 5: Solve for x
    x = 3,407,575,788.99/80,730.01
  6. Step 6: Final answer
    x = 42,209.53

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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.