Home / 91,660.24-137,493.74-28,486.72

Finding the Fourth Proportional to 91,660.24, 137,493.74 and 28,486.72

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Solution

The fourth proportional to 91,660.24, 137,493.74 and 28,486.72 is: 42,731.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,660.24 : 137,493.74 = 28,486.72 : x
  2. Step 2: Convert to fraction form
    91,660.24/137,493.74 = 28,486.72/x
  3. Step 3: Cross multiply
    91,660.24x = 137,493.74 × 28,486.72
  4. Step 4: Simplify right side
    91,660.24x = 3,916,745,673.13
  5. Step 5: Solve for x
    x = 3,916,745,673.13/91,660.24
  6. Step 6: Final answer
    x = 42,731.13

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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.