Home / 86,948.20-130,422.30-42,581.80

Finding the Fourth Proportional to 86,948.20, 130,422.30 and 42,581.80

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Solution

The fourth proportional to 86,948.20, 130,422.30 and 42,581.80 is: 63,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,948.20 : 130,422.30 = 42,581.80 : x
  2. Step 2: Convert to fraction form
    86,948.20/130,422.30 = 42,581.80/x
  3. Step 3: Cross multiply
    86,948.20x = 130,422.30 × 42,581.80
  4. Step 4: Simplify right side
    86,948.20x = 5,553,616,294.14
  5. Step 5: Solve for x
    x = 5,553,616,294.14/86,948.20
  6. Step 6: Final answer
    x = 63,872.70

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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.