Home / 91,929.86-137,766.26-49,718.78

Finding the Fourth Proportional to 91,929.86, 137,766.26 and 49,718.78

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Solution

The fourth proportional to 91,929.86, 137,766.26 and 49,718.78 is: 74,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,929.86 : 137,766.26 = 49,718.78 : x
  2. Step 2: Convert to fraction form
    91,929.86/137,766.26 = 49,718.78/x
  3. Step 3: Cross multiply
    91,929.86x = 137,766.26 × 49,718.78
  4. Step 4: Simplify right side
    91,929.86x = 6,849,570,372.36
  5. Step 5: Solve for x
    x = 6,849,570,372.36/91,929.86
  6. Step 6: Final answer
    x = 74,508.66

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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.