Home / 87,319.40-130,892.70-42,909.80

Finding the Fourth Proportional to 87,319.40, 130,892.70 and 42,909.80

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Solution

The fourth proportional to 87,319.40, 130,892.70 and 42,909.80 is: 64,322.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,319.40 : 130,892.70 = 42,909.80 : x
  2. Step 2: Convert to fraction form
    87,319.40/130,892.70 = 42,909.80/x
  3. Step 3: Cross multiply
    87,319.40x = 130,892.70 × 42,909.80
  4. Step 4: Simplify right side
    87,319.40x = 5,616,579,578.46
  5. Step 5: Solve for x
    x = 5,616,579,578.46/87,319.40
  6. Step 6: Final answer
    x = 64,322.24

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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.