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Finding the Fourth Proportional to 78,563.00, 117,862.92 and 25,972.13

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Solution

The fourth proportional to 78,563.00, 117,862.92 and 25,972.13 is: 38,964.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563.00 : 117,862.92 = 25,972.13 : x
  2. Step 2: Convert to fraction form
    78,563.00/117,862.92 = 25,972.13/x
  3. Step 3: Cross multiply
    78,563.00x = 117,862.92 × 25,972.13
  4. Step 4: Simplify right side
    78,563.00x = 3,061,150,491.11
  5. Step 5: Solve for x
    x = 3,061,150,491.11/78,563.00
  6. Step 6: Final answer
    x = 38,964.28

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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.