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Finding the Fourth Proportional to 89,478, 123,482.88 and 51,244.56

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Solution

The fourth proportional to 89,478, 123,482.88 and 51,244.56 is: 70,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,478 : 123,482.88 = 51,244.56 : x
  2. Step 2: Convert to fraction form
    89,478/123,482.88 = 51,244.56/x
  3. Step 3: Cross multiply
    89,478x = 123,482.88 × 51,244.56
  4. Step 4: Simplify right side
    89,478x = 6,327,825,853.13
  5. Step 5: Solve for x
    x = 6,327,825,853.13/89,478
  6. Step 6: Final answer
    x = 70,719.35

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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.