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Finding the Fourth Proportional to 71,396.57, 98,525.80 and 39,565.19

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Solution

The fourth proportional to 71,396.57, 98,525.80 and 39,565.19 is: 54,599.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,396.57 : 98,525.80 = 39,565.19 : x
  2. Step 2: Convert to fraction form
    71,396.57/98,525.80 = 39,565.19/x
  3. Step 3: Cross multiply
    71,396.57x = 98,525.80 × 39,565.19
  4. Step 4: Simplify right side
    71,396.57x = 3,898,192,292.67
  5. Step 5: Solve for x
    x = 3,898,192,292.67/71,396.57
  6. Step 6: Final answer
    x = 54,599.15

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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.