Home / 85,610,209.86-128,431,311.33-38,927,124.78

Finding the Fourth Proportional to 85,610,209.86, 128,431,311.33 and 38,927,124.78

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Solution

The fourth proportional to 85,610,209.86, 128,431,311.33 and 38,927,124.78 is: 58,397,960.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,610,209.86 : 128,431,311.33 = 38,927,124.78 : x
  2. Step 2: Convert to fraction form
    85,610,209.86/128,431,311.33 = 38,927,124.78/x
  3. Step 3: Cross multiply
    85,610,209.86x = 128,431,311.33 × 38,927,124.78
  4. Step 4: Simplify right side
    85,610,209.86x = 4,999,461,681,801,938
  5. Step 5: Solve for x
    x = 4,999,461,681,801,938/85,610,209.86
  6. Step 6: Final answer
    x = 58,397,960.83

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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.