Home / 91,780.24-137,684.76-39,190

Finding the Fourth Proportional to 91,780.24, 137,684.76 and 39,190

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Solution

The fourth proportional to 91,780.24, 137,684.76 and 39,190 is: 58,791.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,780.24 : 137,684.76 = 39,190 : x
  2. Step 2: Convert to fraction form
    91,780.24/137,684.76 = 39,190/x
  3. Step 3: Cross multiply
    91,780.24x = 137,684.76 × 39,190
  4. Step 4: Simplify right side
    91,780.24x = 5,395,865,744.40
  5. Step 5: Solve for x
    x = 5,395,865,744.40/91,780.24
  6. Step 6: Final answer
    x = 58,791.15

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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.