Home / 78,532.56-117,713.16-38,579.04

Finding the Fourth Proportional to 78,532.56, 117,713.16 and 38,579.04

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Solution

The fourth proportional to 78,532.56, 117,713.16 and 38,579.04 is: 57,826.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,532.56 : 117,713.16 = 38,579.04 : x
  2. Step 2: Convert to fraction form
    78,532.56/117,713.16 = 38,579.04/x
  3. Step 3: Cross multiply
    78,532.56x = 117,713.16 × 38,579.04
  4. Step 4: Simplify right side
    78,532.56x = 4,541,260,708.17
  5. Step 5: Solve for x
    x = 4,541,260,708.17/78,532.56
  6. Step 6: Final answer
    x = 57,826.47

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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.