Home / 85,840,298.52-128,817,169.38-40,415,083.80

Finding the Fourth Proportional to 85,840,298.52, 128,817,169.38 and 40,415,083.80

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Solution

The fourth proportional to 85,840,298.52, 128,817,169.38 and 40,415,083.80 is: 60,649,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840,298.52 : 128,817,169.38 = 40,415,083.80 : x
  2. Step 2: Convert to fraction form
    85,840,298.52/128,817,169.38 = 40,415,083.80/x
  3. Step 3: Cross multiply
    85,840,298.52x = 128,817,169.38 × 40,415,083.80
  4. Step 4: Simplify right side
    85,840,298.52x = 5,206,156,695,371,493
  5. Step 5: Solve for x
    x = 5,206,156,695,371,493/85,840,298.52
  6. Step 6: Final answer
    x = 60,649,331.20

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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.