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Finding the Fourth Proportional to 91,248.87, 125,920.86 and 50,961.45

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Solution

The fourth proportional to 91,248.87, 125,920.86 and 50,961.45 is: 70,325.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,248.87 : 125,920.86 = 50,961.45 : x
  2. Step 2: Convert to fraction form
    91,248.87/125,920.86 = 50,961.45/x
  3. Step 3: Cross multiply
    91,248.87x = 125,920.86 × 50,961.45
  4. Step 4: Simplify right side
    91,248.87x = 6,417,109,610.85
  5. Step 5: Solve for x
    x = 6,417,109,610.85/91,248.87
  6. Step 6: Final answer
    x = 70,325.36

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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.