Home / 78,618.06-117,890.80-25,300.13

Finding the Fourth Proportional to 78,618.06, 117,890.80 and 25,300.13

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Solution

The fourth proportional to 78,618.06, 117,890.80 and 25,300.13 is: 37,938.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,618.06 : 117,890.80 = 25,300.13 : x
  2. Step 2: Convert to fraction form
    78,618.06/117,890.80 = 25,300.13/x
  3. Step 3: Cross multiply
    78,618.06x = 117,890.80 × 25,300.13
  4. Step 4: Simplify right side
    78,618.06x = 2,982,651,913.10
  5. Step 5: Solve for x
    x = 2,982,651,913.10/78,618.06
  6. Step 6: Final answer
    x = 37,938.51

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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.