Home / 86,275.74-129,435.10-68,573.20

Finding the Fourth Proportional to 86,275.74, 129,435.10 and 68,573.20

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Solution

The fourth proportional to 86,275.74, 129,435.10 and 68,573.20 is: 102,876.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,275.74 : 129,435.10 = 68,573.20 : x
  2. Step 2: Convert to fraction form
    86,275.74/129,435.10 = 68,573.20/x
  3. Step 3: Cross multiply
    86,275.74x = 129,435.10 × 68,573.20
  4. Step 4: Simplify right side
    86,275.74x = 8,875,778,999.32
  5. Step 5: Solve for x
    x = 8,875,778,999.32/86,275.74
  6. Step 6: Final answer
    x = 102,876.88

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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.