Home / 47,789.30-71,681.65-19,708.90

Finding the Fourth Proportional to 47,789.30, 71,681.65 and 19,708.90

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Solution

The fourth proportional to 47,789.30, 71,681.65 and 19,708.90 is: 29,562.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,789.30 : 71,681.65 = 19,708.90 : x
  2. Step 2: Convert to fraction form
    47,789.30/71,681.65 = 19,708.90/x
  3. Step 3: Cross multiply
    47,789.30x = 71,681.65 × 19,708.90
  4. Step 4: Simplify right side
    47,789.30x = 1,412,766,471.69
  5. Step 5: Solve for x
    x = 1,412,766,471.69/47,789.30
  6. Step 6: Final answer
    x = 29,562.40

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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.