Home / 81,295.28-121,877.40-74,734.28

Finding the Fourth Proportional to 81,295.28, 121,877.40 and 74,734.28

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Solution

The fourth proportional to 81,295.28, 121,877.40 and 74,734.28 is: 112,041.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,295.28 : 121,877.40 = 74,734.28 : x
  2. Step 2: Convert to fraction form
    81,295.28/121,877.40 = 74,734.28/x
  3. Step 3: Cross multiply
    81,295.28x = 121,877.40 × 74,734.28
  4. Step 4: Simplify right side
    81,295.28x = 9,108,419,737.27
  5. Step 5: Solve for x
    x = 9,108,419,737.27/81,295.28
  6. Step 6: Final answer
    x = 112,041.19

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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.