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Finding the Fourth Proportional to 65,572.68, 90,332.24 and 52,139.64

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Solution

The fourth proportional to 65,572.68, 90,332.24 and 52,139.64 is: 71,827.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,572.68 : 90,332.24 = 52,139.64 : x
  2. Step 2: Convert to fraction form
    65,572.68/90,332.24 = 52,139.64/x
  3. Step 3: Cross multiply
    65,572.68x = 90,332.24 × 52,139.64
  4. Step 4: Simplify right side
    65,572.68x = 4,709,890,473.99
  5. Step 5: Solve for x
    x = 4,709,890,473.99/65,572.68
  6. Step 6: Final answer
    x = 71,827.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.