Home / 86,724.80-130,116.36-34,139.60

Finding the Fourth Proportional to 86,724.80, 130,116.36 and 34,139.60

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Solution

The fourth proportional to 86,724.80, 130,116.36 and 34,139.60 is: 51,220.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,724.80 : 130,116.36 = 34,139.60 : x
  2. Step 2: Convert to fraction form
    86,724.80/130,116.36 = 34,139.60/x
  3. Step 3: Cross multiply
    86,724.80x = 130,116.36 × 34,139.60
  4. Step 4: Simplify right side
    86,724.80x = 4,442,120,483.86
  5. Step 5: Solve for x
    x = 4,442,120,483.86/86,724.80
  6. Step 6: Final answer
    x = 51,220.88

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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.