Home / 78,004.55-117,007.02-25,418.13

Finding the Fourth Proportional to 78,004.55, 117,007.02 and 25,418.13

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Solution

The fourth proportional to 78,004.55, 117,007.02 and 25,418.13 is: 38,127.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004.55 : 117,007.02 = 25,418.13 : x
  2. Step 2: Convert to fraction form
    78,004.55/117,007.02 = 25,418.13/x
  3. Step 3: Cross multiply
    78,004.55x = 117,007.02 × 25,418.13
  4. Step 4: Simplify right side
    78,004.55x = 2,974,099,645.27
  5. Step 5: Solve for x
    x = 2,974,099,645.27/78,004.55
  6. Step 6: Final answer
    x = 38,127.26

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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.