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Finding the Fourth Proportional to 73,281.66, 101,128.65 and 39,747.66

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Solution

The fourth proportional to 73,281.66, 101,128.65 and 39,747.66 is: 54,851.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,281.66 : 101,128.65 = 39,747.66 : x
  2. Step 2: Convert to fraction form
    73,281.66/101,128.65 = 39,747.66/x
  3. Step 3: Cross multiply
    73,281.66x = 101,128.65 × 39,747.66
  4. Step 4: Simplify right side
    73,281.66x = 4,019,627,196.46
  5. Step 5: Solve for x
    x = 4,019,627,196.46/73,281.66
  6. Step 6: Final answer
    x = 54,851.75

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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.