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Finding the Fourth Proportional to 65,287.59, 90,095.60 and 38,068.76

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Solution

The fourth proportional to 65,287.59, 90,095.60 and 38,068.76 is: 52,534.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,287.59 : 90,095.60 = 38,068.76 : x
  2. Step 2: Convert to fraction form
    65,287.59/90,095.60 = 38,068.76/x
  3. Step 3: Cross multiply
    65,287.59x = 90,095.60 × 38,068.76
  4. Step 4: Simplify right side
    65,287.59x = 3,429,827,418.15
  5. Step 5: Solve for x
    x = 3,429,827,418.15/65,287.59
  6. Step 6: Final answer
    x = 52,534.14

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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.