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Finding the Fourth Proportional to 91,777.59, 137,639.88 and 25,219.89

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Solution

The fourth proportional to 91,777.59, 137,639.88 and 25,219.89 is: 37,822.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,777.59 : 137,639.88 = 25,219.89 : x
  2. Step 2: Convert to fraction form
    91,777.59/137,639.88 = 25,219.89/x
  3. Step 3: Cross multiply
    91,777.59x = 137,639.88 × 25,219.89
  4. Step 4: Simplify right side
    91,777.59x = 3,471,262,633.21
  5. Step 5: Solve for x
    x = 3,471,262,633.21/91,777.59
  6. Step 6: Final answer
    x = 37,822.55

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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.