Home / 87,439.40-130,856.70-52,404.20

Finding the Fourth Proportional to 87,439.40, 130,856.70 and 52,404.20

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Solution

The fourth proportional to 87,439.40, 130,856.70 and 52,404.20 is: 78,425.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,439.40 : 130,856.70 = 52,404.20 : x
  2. Step 2: Convert to fraction form
    87,439.40/130,856.70 = 52,404.20/x
  3. Step 3: Cross multiply
    87,439.40x = 130,856.70 × 52,404.20
  4. Step 4: Simplify right side
    87,439.40x = 6,857,440,678.14
  5. Step 5: Solve for x
    x = 6,857,440,678.14/87,439.40
  6. Step 6: Final answer
    x = 78,425.07

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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.