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Finding the Fourth Proportional to 65,375.18, 90,237.06 and 38,526.33

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Solution

The fourth proportional to 65,375.18, 90,237.06 and 38,526.33 is: 53,177.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,375.18 : 90,237.06 = 38,526.33 : x
  2. Step 2: Convert to fraction form
    65,375.18/90,237.06 = 38,526.33/x
  3. Step 3: Cross multiply
    65,375.18x = 90,237.06 × 38,526.33
  4. Step 4: Simplify right side
    65,375.18x = 3,476,502,751.79
  5. Step 5: Solve for x
    x = 3,476,502,751.79/65,375.18
  6. Step 6: Final answer
    x = 53,177.72

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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.