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Finding the Fourth Proportional to 72,479.68, 100,046.52 and 45,667.12

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Solution

The fourth proportional to 72,479.68, 100,046.52 and 45,667.12 is: 63,036.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,479.68 : 100,046.52 = 45,667.12 : x
  2. Step 2: Convert to fraction form
    72,479.68/100,046.52 = 45,667.12/x
  3. Step 3: Cross multiply
    72,479.68x = 100,046.52 × 45,667.12
  4. Step 4: Simplify right side
    72,479.68x = 4,568,836,434.42
  5. Step 5: Solve for x
    x = 4,568,836,434.42/72,479.68
  6. Step 6: Final answer
    x = 63,036.10

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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.