Home / 78,175.64-117,285.33-25,622.02

Finding the Fourth Proportional to 78,175.64, 117,285.33 and 25,622.02

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Solution

The fourth proportional to 78,175.64, 117,285.33 and 25,622.02 is: 38,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,175.64 : 117,285.33 = 25,622.02 : x
  2. Step 2: Convert to fraction form
    78,175.64/117,285.33 = 25,622.02/x
  3. Step 3: Cross multiply
    78,175.64x = 117,285.33 × 25,622.02
  4. Step 4: Simplify right side
    78,175.64x = 3,005,087,070.97
  5. Step 5: Solve for x
    x = 3,005,087,070.97/78,175.64
  6. Step 6: Final answer
    x = 38,440.20

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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.