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Finding the Fourth Proportional to 65,304.97, 90,094.95 and 42,636.71

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Solution

The fourth proportional to 65,304.97, 90,094.95 and 42,636.71 is: 58,821.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,304.97 : 90,094.95 = 42,636.71 : x
  2. Step 2: Convert to fraction form
    65,304.97/90,094.95 = 42,636.71/x
  3. Step 3: Cross multiply
    65,304.97x = 90,094.95 × 42,636.71
  4. Step 4: Simplify right side
    65,304.97x = 3,841,352,480.85
  5. Step 5: Solve for x
    x = 3,841,352,480.85/65,304.97
  6. Step 6: Final answer
    x = 58,821.75

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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.