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Finding the Fourth Proportional to 91,888.29, 137,856.74 and 49,749.66

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Solution

The fourth proportional to 91,888.29, 137,856.74 and 49,749.66 is: 74,637.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,888.29 : 137,856.74 = 49,749.66 : x
  2. Step 2: Convert to fraction form
    91,888.29/137,856.74 = 49,749.66/x
  3. Step 3: Cross multiply
    91,888.29x = 137,856.74 × 49,749.66
  4. Step 4: Simplify right side
    91,888.29x = 6,858,325,694.96
  5. Step 5: Solve for x
    x = 6,858,325,694.96/91,888.29
  6. Step 6: Final answer
    x = 74,637.65

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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.