Home / 87,019.28-130,294.68-45,378.32

Finding the Fourth Proportional to 87,019.28, 130,294.68 and 45,378.32

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Solution

The fourth proportional to 87,019.28, 130,294.68 and 45,378.32 is: 67,945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,019.28 : 130,294.68 = 45,378.32 : x
  2. Step 2: Convert to fraction form
    87,019.28/130,294.68 = 45,378.32/x
  3. Step 3: Cross multiply
    87,019.28x = 130,294.68 × 45,378.32
  4. Step 4: Simplify right side
    87,019.28x = 5,912,553,683.34
  5. Step 5: Solve for x
    x = 5,912,553,683.34/87,019.28
  6. Step 6: Final answer
    x = 67,945.33

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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.