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Finding the Fourth Proportional to 71,564.72, 98,762.40 and 39,733.63

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Solution

The fourth proportional to 71,564.72, 98,762.40 and 39,733.63 is: 54,834.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,564.72 : 98,762.40 = 39,733.63 : x
  2. Step 2: Convert to fraction form
    71,564.72/98,762.40 = 39,733.63/x
  3. Step 3: Cross multiply
    71,564.72x = 98,762.40 × 39,733.63
  4. Step 4: Simplify right side
    71,564.72x = 3,924,188,165.70
  5. Step 5: Solve for x
    x = 3,924,188,165.70/71,564.72
  6. Step 6: Final answer
    x = 54,834.12

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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.