Home / 91,744.32-137,575.56-31,778.40

Finding the Fourth Proportional to 91,744.32, 137,575.56 and 31,778.40

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Solution

The fourth proportional to 91,744.32, 137,575.56 and 31,778.40 is: 47,653.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,744.32 : 137,575.56 = 31,778.40 : x
  2. Step 2: Convert to fraction form
    91,744.32/137,575.56 = 31,778.40/x
  3. Step 3: Cross multiply
    91,744.32x = 137,575.56 × 31,778.40
  4. Step 4: Simplify right side
    91,744.32x = 4,371,931,175.90
  5. Step 5: Solve for x
    x = 4,371,931,175.90/91,744.32
  6. Step 6: Final answer
    x = 47,653.43

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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.