Home / 81,973.28-122,959.52-25,818.16

Finding the Fourth Proportional to 81,973.28, 122,959.52 and 25,818.16

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Solution

The fourth proportional to 81,973.28, 122,959.52 and 25,818.16 is: 38,727.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,973.28 : 122,959.52 = 25,818.16 : x
  2. Step 2: Convert to fraction form
    81,973.28/122,959.52 = 25,818.16/x
  3. Step 3: Cross multiply
    81,973.28x = 122,959.52 × 25,818.16
  4. Step 4: Simplify right side
    81,973.28x = 3,174,588,560.88
  5. Step 5: Solve for x
    x = 3,174,588,560.88/81,973.28
  6. Step 6: Final answer
    x = 38,727.11

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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.