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Finding the Fourth Proportional to 64,646.82, 89,191.17 and 52,689.62

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Solution

The fourth proportional to 64,646.82, 89,191.17 and 52,689.62 is: 72,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,646.82 : 89,191.17 = 52,689.62 : x
  2. Step 2: Convert to fraction form
    64,646.82/89,191.17 = 52,689.62/x
  3. Step 3: Cross multiply
    64,646.82x = 89,191.17 × 52,689.62
  4. Step 4: Simplify right side
    64,646.82x = 4,699,448,854.66
  5. Step 5: Solve for x
    x = 4,699,448,854.66/64,646.82
  6. Step 6: Final answer
    x = 72,694.20

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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.