Home / 87,423.78-131,068.47-45,258.66

Finding the Fourth Proportional to 87,423.78, 131,068.47 and 45,258.66

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Solution

The fourth proportional to 87,423.78, 131,068.47 and 45,258.66 is: 67,853.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,423.78 : 131,068.47 = 45,258.66 : x
  2. Step 2: Convert to fraction form
    87,423.78/131,068.47 = 45,258.66/x
  3. Step 3: Cross multiply
    87,423.78x = 131,068.47 × 45,258.66
  4. Step 4: Simplify right side
    87,423.78x = 5,931,983,320.45
  5. Step 5: Solve for x
    x = 5,931,983,320.45/87,423.78
  6. Step 6: Final answer
    x = 67,853.20

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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.