Home / 87,084.39-130,684.77-31,680.39

Finding the Fourth Proportional to 87,084.39, 130,684.77 and 31,680.39

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Solution

The fourth proportional to 87,084.39, 130,684.77 and 31,680.39 is: 47,541.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,084.39 : 130,684.77 = 31,680.39 : x
  2. Step 2: Convert to fraction form
    87,084.39/130,684.77 = 31,680.39/x
  3. Step 3: Cross multiply
    87,084.39x = 130,684.77 × 31,680.39
  4. Step 4: Simplify right side
    87,084.39x = 4,140,144,480.66
  5. Step 5: Solve for x
    x = 4,140,144,480.66/87,084.39
  6. Step 6: Final answer
    x = 47,541.75

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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.