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Finding the Fourth Proportional to 89,472.78, 123,474.81 and 48,639.65

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Solution

The fourth proportional to 89,472.78, 123,474.81 and 48,639.65 is: 67,124.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,472.78 : 123,474.81 = 48,639.65 : x
  2. Step 2: Convert to fraction form
    89,472.78/123,474.81 = 48,639.65/x
  3. Step 3: Cross multiply
    89,472.78x = 123,474.81 × 48,639.65
  4. Step 4: Simplify right side
    89,472.78x = 6,005,771,542.22
  5. Step 5: Solve for x
    x = 6,005,771,542.22/89,472.78
  6. Step 6: Final answer
    x = 67,124.01

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1.5x scale

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.