Home / 87,864.20-121,252.66-47,578.28

Finding the Fourth Proportional to 87,864.20, 121,252.66 and 47,578.28

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Solution

The fourth proportional to 87,864.20, 121,252.66 and 47,578.28 is: 65,658.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,864.20 : 121,252.66 = 47,578.28 : x
  2. Step 2: Convert to fraction form
    87,864.20/121,252.66 = 47,578.28/x
  3. Step 3: Cross multiply
    87,864.20x = 121,252.66 × 47,578.28
  4. Step 4: Simplify right side
    87,864.20x = 5,768,993,008.22
  5. Step 5: Solve for x
    x = 5,768,993,008.22/87,864.20
  6. Step 6: Final answer
    x = 65,658.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.