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Finding the Fourth Proportional to 65,373.80, 90,217.38 and 35,567.72

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Solution

The fourth proportional to 65,373.80, 90,217.38 and 35,567.72 is: 49,084.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,373.80 : 90,217.38 = 35,567.72 : x
  2. Step 2: Convert to fraction form
    65,373.80/90,217.38 = 35,567.72/x
  3. Step 3: Cross multiply
    65,373.80x = 90,217.38 × 35,567.72
  4. Step 4: Simplify right side
    65,373.80x = 3,208,826,510.97
  5. Step 5: Solve for x
    x = 3,208,826,510.97/65,373.80
  6. Step 6: Final answer
    x = 49,084.29

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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.