Home / 91,690.74-137,543.40-39,100.68

Finding the Fourth Proportional to 91,690.74, 137,543.40 and 39,100.68

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Solution

The fourth proportional to 91,690.74, 137,543.40 and 39,100.68 is: 58,654.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,690.74 : 137,543.40 = 39,100.68 : x
  2. Step 2: Convert to fraction form
    91,690.74/137,543.40 = 39,100.68/x
  3. Step 3: Cross multiply
    91,690.74x = 137,543.40 × 39,100.68
  4. Step 4: Simplify right side
    91,690.74x = 5,378,040,469.51
  5. Step 5: Solve for x
    x = 5,378,040,469.51/91,690.74
  6. Step 6: Final answer
    x = 58,654.13

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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.