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Finding the Fourth Proportional to 65,750.60, 90,738.98 and 40,248.84

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Solution

The fourth proportional to 65,750.60, 90,738.98 and 40,248.84 is: 55,545.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,750.60 : 90,738.98 = 40,248.84 : x
  2. Step 2: Convert to fraction form
    65,750.60/90,738.98 = 40,248.84/x
  3. Step 3: Cross multiply
    65,750.60x = 90,738.98 × 40,248.84
  4. Step 4: Simplify right side
    65,750.60x = 3,652,138,687.78
  5. Step 5: Solve for x
    x = 3,652,138,687.78/65,750.60
  6. Step 6: Final answer
    x = 55,545.33

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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.