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Finding the Fourth Proportional to 65,456.57, 90,330.08 and 35,648.57

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Solution

The fourth proportional to 65,456.57, 90,330.08 and 35,648.57 is: 49,195.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,456.57 : 90,330.08 = 35,648.57 : x
  2. Step 2: Convert to fraction form
    65,456.57/90,330.08 = 35,648.57/x
  3. Step 3: Cross multiply
    65,456.57x = 90,330.08 × 35,648.57
  4. Step 4: Simplify right side
    65,456.57x = 3,220,138,227.57
  5. Step 5: Solve for x
    x = 3,220,138,227.57/65,456.57
  6. Step 6: Final answer
    x = 49,195.03

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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.