Home / 71,439.12-98,584.20-39,607.92

Finding the Fourth Proportional to 71,439.12, 98,584.20 and 39,607.92

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Solution

The fourth proportional to 71,439.12, 98,584.20 and 39,607.92 is: 54,657.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,439.12 : 98,584.20 = 39,607.92 : x
  2. Step 2: Convert to fraction form
    71,439.12/98,584.20 = 39,607.92/x
  3. Step 3: Cross multiply
    71,439.12x = 98,584.20 × 39,607.92
  4. Step 4: Simplify right side
    71,439.12x = 3,904,715,106.86
  5. Step 5: Solve for x
    x = 3,904,715,106.86/71,439.12
  6. Step 6: Final answer
    x = 54,657.94

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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.