Home / 66,530.70-99,815.18-38,470.86

Finding the Fourth Proportional to 66,530.70, 99,815.18 and 38,470.86

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Solution

The fourth proportional to 66,530.70, 99,815.18 and 38,470.86 is: 57,717.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,530.70 : 99,815.18 = 38,470.86 : x
  2. Step 2: Convert to fraction form
    66,530.70/99,815.18 = 38,470.86/x
  3. Step 3: Cross multiply
    66,530.70x = 99,815.18 × 38,470.86
  4. Step 4: Simplify right side
    66,530.70x = 3,839,975,623.30
  5. Step 5: Solve for x
    x = 3,839,975,623.30/66,530.70
  6. Step 6: Final answer
    x = 57,717.35

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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.