Home / 74,812.28-112,121.44-30,387

Finding the Fourth Proportional to 74,812.28, 112,121.44 and 30,387

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Solution

The fourth proportional to 74,812.28, 112,121.44 and 30,387 is: 45,541.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,812.28 : 112,121.44 = 30,387 : x
  2. Step 2: Convert to fraction form
    74,812.28/112,121.44 = 30,387/x
  3. Step 3: Cross multiply
    74,812.28x = 112,121.44 × 30,387
  4. Step 4: Simplify right side
    74,812.28x = 3,407,034,197.28
  5. Step 5: Solve for x
    x = 3,407,034,197.28/74,812.28
  6. Step 6: Final answer
    x = 45,541.11

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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.