Home / 66,308.72-99,463.52-18,923.68

Finding the Fourth Proportional to 66,308.72, 99,463.52 and 18,923.68

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Solution

The fourth proportional to 66,308.72, 99,463.52 and 18,923.68 is: 28,385.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,308.72 : 99,463.52 = 18,923.68 : x
  2. Step 2: Convert to fraction form
    66,308.72/99,463.52 = 18,923.68/x
  3. Step 3: Cross multiply
    66,308.72x = 99,463.52 × 18,923.68
  4. Step 4: Simplify right side
    66,308.72x = 1,882,215,824.15
  5. Step 5: Solve for x
    x = 1,882,215,824.15/66,308.72
  6. Step 6: Final answer
    x = 28,385.65

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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.