Home / 81,042.28-111,750.18-52,695.40

Finding the Fourth Proportional to 81,042.28, 111,750.18 and 52,695.40

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Solution

The fourth proportional to 81,042.28, 111,750.18 and 52,695.40 is: 72,662.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,042.28 : 111,750.18 = 52,695.40 : x
  2. Step 2: Convert to fraction form
    81,042.28/111,750.18 = 52,695.40/x
  3. Step 3: Cross multiply
    81,042.28x = 111,750.18 × 52,695.40
  4. Step 4: Simplify right side
    81,042.28x = 5,888,720,435.17
  5. Step 5: Solve for x
    x = 5,888,720,435.17/81,042.28
  6. Step 6: Final answer
    x = 72,662.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.