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Finding the Fourth Proportional to 91,284, 125,974.72 and 50,999.52

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Solution

The fourth proportional to 91,284, 125,974.72 and 50,999.52 is: 70,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,284 : 125,974.72 = 50,999.52 : x
  2. Step 2: Convert to fraction form
    91,284/125,974.72 = 50,999.52/x
  3. Step 3: Cross multiply
    91,284x = 125,974.72 × 50,999.52
  4. Step 4: Simplify right side
    91,284x = 6,424,650,252.13
  5. Step 5: Solve for x
    x = 6,424,650,252.13/91,284
  6. Step 6: Final answer
    x = 70,380.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.