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Finding the Fourth Proportional to 64,398.84, 96,624.84 and 28,356.78

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Solution

The fourth proportional to 64,398.84, 96,624.84 and 28,356.78 is: 42,546.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,398.84 : 96,624.84 = 28,356.78 : x
  2. Step 2: Convert to fraction form
    64,398.84/96,624.84 = 28,356.78/x
  3. Step 3: Cross multiply
    64,398.84x = 96,624.84 × 28,356.78
  4. Step 4: Simplify right side
    64,398.84x = 2,739,969,330.42
  5. Step 5: Solve for x
    x = 2,739,969,330.42/64,398.84
  6. Step 6: Final answer
    x = 42,546.87

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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.