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Finding the Fourth Proportional to 91,769.29, 137,653.80 and 25,209.70

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Solution

The fourth proportional to 91,769.29, 137,653.80 and 25,209.70 is: 37,814.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,769.29 : 137,653.80 = 25,209.70 : x
  2. Step 2: Convert to fraction form
    91,769.29/137,653.80 = 25,209.70/x
  3. Step 3: Cross multiply
    91,769.29x = 137,653.80 × 25,209.70
  4. Step 4: Simplify right side
    91,769.29x = 3,470,211,001.86
  5. Step 5: Solve for x
    x = 3,470,211,001.86/91,769.29
  6. Step 6: Final answer
    x = 37,814.51

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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.