Home / 87,017.28-130,291.68-45,376.32

Finding the Fourth Proportional to 87,017.28, 130,291.68 and 45,376.32

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Solution

The fourth proportional to 87,017.28, 130,291.68 and 45,376.32 is: 67,942.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,017.28 : 130,291.68 = 45,376.32 : x
  2. Step 2: Convert to fraction form
    87,017.28/130,291.68 = 45,376.32/x
  3. Step 3: Cross multiply
    87,017.28x = 130,291.68 × 45,376.32
  4. Step 4: Simplify right side
    87,017.28x = 5,912,156,965.02
  5. Step 5: Solve for x
    x = 5,912,156,965.02/87,017.28
  6. Step 6: Final answer
    x = 67,942.33

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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.