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Finding the Fourth Proportional to 65,374.74, 90,236.48 and 38,525.85

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Solution

The fourth proportional to 65,374.74, 90,236.48 and 38,525.85 is: 53,177.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,374.74 : 90,236.48 = 38,525.85 : x
  2. Step 2: Convert to fraction form
    65,374.74/90,236.48 = 38,525.85/x
  3. Step 3: Cross multiply
    65,374.74x = 90,236.48 × 38,525.85
  4. Step 4: Simplify right side
    65,374.74x = 3,476,436,900.38
  5. Step 5: Solve for x
    x = 3,476,436,900.38/65,374.74
  6. Step 6: Final answer
    x = 53,177.07

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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.