Home / 87,474.28-120,693.90-64,865.56

Finding the Fourth Proportional to 87,474.28, 120,693.90 and 64,865.56

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Solution

The fourth proportional to 87,474.28, 120,693.90 and 64,865.56 is: 89,499.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,474.28 : 120,693.90 = 64,865.56 : x
  2. Step 2: Convert to fraction form
    87,474.28/120,693.90 = 64,865.56/x
  3. Step 3: Cross multiply
    87,474.28x = 120,693.90 × 64,865.56
  4. Step 4: Simplify right side
    87,474.28x = 7,828,877,412.08
  5. Step 5: Solve for x
    x = 7,828,877,412.08/87,474.28
  6. Step 6: Final answer
    x = 89,499.19

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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.