Home / 78,151.73-117,040.29-40,100.87

Finding the Fourth Proportional to 78,151.73, 117,040.29 and 40,100.87

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Solution

The fourth proportional to 78,151.73, 117,040.29 and 40,100.87 is: 60,055.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,151.73 : 117,040.29 = 40,100.87 : x
  2. Step 2: Convert to fraction form
    78,151.73/117,040.29 = 40,100.87/x
  3. Step 3: Cross multiply
    78,151.73x = 117,040.29 × 40,100.87
  4. Step 4: Simplify right side
    78,151.73x = 4,693,417,489.61
  5. Step 5: Solve for x
    x = 4,693,417,489.61/78,151.73
  6. Step 6: Final answer
    x = 60,055.19

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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.