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Finding the Fourth Proportional to 88,872.40, 133,049.40 and 79,541.20

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Solution

The fourth proportional to 88,872.40, 133,049.40 and 79,541.20 is: 119,079.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,872.40 : 133,049.40 = 79,541.20 : x
  2. Step 2: Convert to fraction form
    88,872.40/133,049.40 = 79,541.20/x
  3. Step 3: Cross multiply
    88,872.40x = 133,049.40 × 79,541.20
  4. Step 4: Simplify right side
    88,872.40x = 10,582,908,935.28
  5. Step 5: Solve for x
    x = 10,582,908,935.28/88,872.40
  6. Step 6: Final answer
    x = 119,079.81

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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.