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Finding the Fourth Proportional to 58,776.91, 81,167.47 and 40,920.73

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Solution

The fourth proportional to 58,776.91, 81,167.47 and 40,920.73 is: 56,509.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,776.91 : 81,167.47 = 40,920.73 : x
  2. Step 2: Convert to fraction form
    58,776.91/81,167.47 = 40,920.73/x
  3. Step 3: Cross multiply
    58,776.91x = 81,167.47 × 40,920.73
  4. Step 4: Simplify right side
    58,776.91x = 3,321,431,819.43
  5. Step 5: Solve for x
    x = 3,321,431,819.43/58,776.91
  6. Step 6: Final answer
    x = 56,509.13

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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.