Home / 78,004.56-117,007.02-25,418.16

Finding the Fourth Proportional to 78,004.56, 117,007.02 and 25,418.16

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Solution

The fourth proportional to 78,004.56, 117,007.02 and 25,418.16 is: 38,127.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004.56 : 117,007.02 = 25,418.16 : x
  2. Step 2: Convert to fraction form
    78,004.56/117,007.02 = 25,418.16/x
  3. Step 3: Cross multiply
    78,004.56x = 117,007.02 × 25,418.16
  4. Step 4: Simplify right side
    78,004.56x = 2,974,103,155.48
  5. Step 5: Solve for x
    x = 2,974,103,155.48/78,004.56
  6. Step 6: Final answer
    x = 38,127.30

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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.