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Finding the Fourth Proportional to 71,244.22, 98,314.07 and 38,978.68

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Solution

The fourth proportional to 71,244.22, 98,314.07 and 38,978.68 is: 53,788.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,244.22 : 98,314.07 = 38,978.68 : x
  2. Step 2: Convert to fraction form
    71,244.22/98,314.07 = 38,978.68/x
  3. Step 3: Cross multiply
    71,244.22x = 98,314.07 × 38,978.68
  4. Step 4: Simplify right side
    71,244.22x = 3,832,152,674.03
  5. Step 5: Solve for x
    x = 3,832,152,674.03/71,244.22
  6. Step 6: Final answer
    x = 53,788.96

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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.