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Finding the Fourth Proportional to 65,360.56, 90,177 and 37,060.78

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Solution

The fourth proportional to 65,360.56, 90,177 and 37,060.78 is: 51,132.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,360.56 : 90,177 = 37,060.78 : x
  2. Step 2: Convert to fraction form
    65,360.56/90,177 = 37,060.78/x
  3. Step 3: Cross multiply
    65,360.56x = 90,177 × 37,060.78
  4. Step 4: Simplify right side
    65,360.56x = 3,342,029,958.06
  5. Step 5: Solve for x
    x = 3,342,029,958.06/65,360.56
  6. Step 6: Final answer
    x = 51,132.21

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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.