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Finding the Fourth Proportional to 78,338.34, 108,033.48 and 60,404.94

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Solution

The fourth proportional to 78,338.34, 108,033.48 and 60,404.94 is: 83,302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,338.34 : 108,033.48 = 60,404.94 : x
  2. Step 2: Convert to fraction form
    78,338.34/108,033.48 = 60,404.94/x
  3. Step 3: Cross multiply
    78,338.34x = 108,033.48 × 60,404.94
  4. Step 4: Simplify right side
    78,338.34x = 6,525,755,877.39
  5. Step 5: Solve for x
    x = 6,525,755,877.39/78,338.34
  6. Step 6: Final answer
    x = 83,302.20

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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.