Home / 91,121.28-136,721.38-48,952.16

Finding the Fourth Proportional to 91,121.28, 136,721.38 and 48,952.16

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Solution

The fourth proportional to 91,121.28, 136,721.38 and 48,952.16 is: 73,449.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,121.28 : 136,721.38 = 48,952.16 : x
  2. Step 2: Convert to fraction form
    91,121.28/136,721.38 = 48,952.16/x
  3. Step 3: Cross multiply
    91,121.28x = 136,721.38 × 48,952.16
  4. Step 4: Simplify right side
    91,121.28x = 6,692,806,869.18
  5. Step 5: Solve for x
    x = 6,692,806,869.18/91,121.28
  6. Step 6: Final answer
    x = 73,449.44

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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.