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Finding the Fourth Proportional to 71,423.76, 98,564.78 and 39,597.50

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Solution

The fourth proportional to 71,423.76, 98,564.78 and 39,597.50 is: 54,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,423.76 : 98,564.78 = 39,597.50 : x
  2. Step 2: Convert to fraction form
    71,423.76/98,564.78 = 39,597.50/x
  3. Step 3: Cross multiply
    71,423.76x = 98,564.78 × 39,597.50
  4. Step 4: Simplify right side
    71,423.76x = 3,902,918,876.05
  5. Step 5: Solve for x
    x = 3,902,918,876.05/71,423.76
  6. Step 6: Final answer
    x = 54,644.55

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1.5x scale

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.