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Finding the Fourth Proportional to 71,733.60, 98,990.10 and 39,902.22

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Solution

The fourth proportional to 71,733.60, 98,990.10 and 39,902.22 is: 55,063.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,733.60 : 98,990.10 = 39,902.22 : x
  2. Step 2: Convert to fraction form
    71,733.60/98,990.10 = 39,902.22/x
  3. Step 3: Cross multiply
    71,733.60x = 98,990.10 × 39,902.22
  4. Step 4: Simplify right side
    71,733.60x = 3,949,924,748.02
  5. Step 5: Solve for x
    x = 3,949,924,748.02/71,733.60
  6. Step 6: Final answer
    x = 55,063.80

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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.