Home / 87,439.80-120,663.42-51,641.34

Finding the Fourth Proportional to 87,439.80, 120,663.42 and 51,641.34

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Solution

The fourth proportional to 87,439.80, 120,663.42 and 51,641.34 is: 71,262.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,439.80 : 120,663.42 = 51,641.34 : x
  2. Step 2: Convert to fraction form
    87,439.80/120,663.42 = 51,641.34/x
  3. Step 3: Cross multiply
    87,439.80x = 120,663.42 × 51,641.34
  4. Step 4: Simplify right side
    87,439.80x = 6,231,220,697.78
  5. Step 5: Solve for x
    x = 6,231,220,697.78/87,439.80
  6. Step 6: Final answer
    x = 71,262.98

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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.