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Finding the Fourth Proportional to 71,562.83, 107,332.09 and 18,977.63

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Solution

The fourth proportional to 71,562.83, 107,332.09 and 18,977.63 is: 28,463.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,562.83 : 107,332.09 = 18,977.63 : x
  2. Step 2: Convert to fraction form
    71,562.83/107,332.09 = 18,977.63/x
  3. Step 3: Cross multiply
    71,562.83x = 107,332.09 × 18,977.63
  4. Step 4: Simplify right side
    71,562.83x = 2,036,908,691.15
  5. Step 5: Solve for x
    x = 2,036,908,691.15/71,562.83
  6. Step 6: Final answer
    x = 28,463.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.