Home / 61,543.28-84,897.15-42,390.11

Finding the Fourth Proportional to 61,543.28, 84,897.15 and 42,390.11

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Solution

The fourth proportional to 61,543.28, 84,897.15 and 42,390.11 is: 58,475.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,543.28 : 84,897.15 = 42,390.11 : x
  2. Step 2: Convert to fraction form
    61,543.28/84,897.15 = 42,390.11/x
  3. Step 3: Cross multiply
    61,543.28x = 84,897.15 × 42,390.11
  4. Step 4: Simplify right side
    61,543.28x = 3,598,799,102.70
  5. Step 5: Solve for x
    x = 3,598,799,102.70/61,543.28
  6. Step 6: Final answer
    x = 58,475.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.