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Finding the Fourth Proportional to 65,237.33, 90,019.10 and 38,370.03

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Solution

The fourth proportional to 65,237.33, 90,019.10 and 38,370.03 is: 52,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,237.33 : 90,019.10 = 38,370.03 : x
  2. Step 2: Convert to fraction form
    65,237.33/90,019.10 = 38,370.03/x
  3. Step 3: Cross multiply
    65,237.33x = 90,019.10 × 38,370.03
  4. Step 4: Simplify right side
    65,237.33x = 3,454,035,375.72
  5. Step 5: Solve for x
    x = 3,454,035,375.72/65,237.33
  6. Step 6: Final answer
    x = 52,945.69

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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.