Home / 87,680.97-121,000.95-51,870.06

Finding the Fourth Proportional to 87,680.97, 121,000.95 and 51,870.06

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Solution

The fourth proportional to 87,680.97, 121,000.95 and 51,870.06 is: 71,581.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,680.97 : 121,000.95 = 51,870.06 : x
  2. Step 2: Convert to fraction form
    87,680.97/121,000.95 = 51,870.06/x
  3. Step 3: Cross multiply
    87,680.97x = 121,000.95 × 51,870.06
  4. Step 4: Simplify right side
    87,680.97x = 6,276,326,536.56
  5. Step 5: Solve for x
    x = 6,276,326,536.56/87,680.97
  6. Step 6: Final answer
    x = 71,581.40

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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.