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Finding the Fourth Proportional to 65,885.48, 90,921.06 and 36,077.48

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Solution

The fourth proportional to 65,885.48, 90,921.06 and 36,077.48 is: 49,786.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,885.48 : 90,921.06 = 36,077.48 : x
  2. Step 2: Convert to fraction form
    65,885.48/90,921.06 = 36,077.48/x
  3. Step 3: Cross multiply
    65,885.48x = 90,921.06 × 36,077.48
  4. Step 4: Simplify right side
    65,885.48x = 3,280,202,723.73
  5. Step 5: Solve for x
    x = 3,280,202,723.73/65,885.48
  6. Step 6: Final answer
    x = 49,786.43

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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.