Home / 85,840,307.52-128,817,182.90-40,415,092.80

Finding the Fourth Proportional to 85,840,307.52, 128,817,182.90 and 40,415,092.80

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Solution

The fourth proportional to 85,840,307.52, 128,817,182.90 and 40,415,092.80 is: 60,649,344.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840,307.52 : 128,817,182.90 = 40,415,092.80 : x
  2. Step 2: Convert to fraction form
    85,840,307.52/128,817,182.90 = 40,415,092.80/x
  3. Step 3: Cross multiply
    85,840,307.52x = 128,817,182.90 × 40,415,092.80
  4. Step 4: Simplify right side
    85,840,307.52x = 5,206,158,401,138,073
  5. Step 5: Solve for x
    x = 5,206,158,401,138,073/85,840,307.52
  6. Step 6: Final answer
    x = 60,649,344.71

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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.