Home / 80,077,117.20-120,115,675.80-54,378,992.40

Finding the Fourth Proportional to 80,077,117.20, 120,115,675.80 and 54,378,992.40

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Solution

The fourth proportional to 80,077,117.20, 120,115,675.80 and 54,378,992.40 is: 81,568,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,077,117.20 : 120,115,675.80 = 54,378,992.40 : x
  2. Step 2: Convert to fraction form
    80,077,117.20/120,115,675.80 = 54,378,992.40/x
  3. Step 3: Cross multiply
    80,077,117.20x = 120,115,675.80 × 54,378,992.40
  4. Step 4: Simplify right side
    80,077,117.20x = 6,531,769,421,449,064
  5. Step 5: Solve for x
    x = 6,531,769,421,449,064/80,077,117.20
  6. Step 6: Final answer
    x = 81,568,488.60

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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.