Home / 86,276.74-129,436.60-68,574.20

Finding the Fourth Proportional to 86,276.74, 129,436.60 and 68,574.20

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Solution

The fourth proportional to 86,276.74, 129,436.60 and 68,574.20 is: 102,878.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,276.74 : 129,436.60 = 68,574.20 : x
  2. Step 2: Convert to fraction form
    86,276.74/129,436.60 = 68,574.20/x
  3. Step 3: Cross multiply
    86,276.74x = 129,436.60 × 68,574.20
  4. Step 4: Simplify right side
    86,276.74x = 8,876,011,295.72
  5. Step 5: Solve for x
    x = 8,876,011,295.72/86,276.74
  6. Step 6: Final answer
    x = 102,878.38

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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.