Home / 91,862.19-137,811.92-28,679.76

Finding the Fourth Proportional to 91,862.19, 137,811.92 and 28,679.76

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Solution

The fourth proportional to 91,862.19, 137,811.92 and 28,679.76 is: 43,025.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,862.19 : 137,811.92 = 28,679.76 : x
  2. Step 2: Convert to fraction form
    91,862.19/137,811.92 = 28,679.76/x
  3. Step 3: Cross multiply
    91,862.19x = 137,811.92 × 28,679.76
  4. Step 4: Simplify right side
    91,862.19x = 3,952,412,647.34
  5. Step 5: Solve for x
    x = 3,952,412,647.34/91,862.19
  6. Step 6: Final answer
    x = 43,025.46

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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.