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Finding the Fourth Proportional to 69,101.30, 102,938.81 and 67,010.49

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Solution

The fourth proportional to 69,101.30, 102,938.81 and 67,010.49 is: 99,824.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,101.30 : 102,938.81 = 67,010.49 : x
  2. Step 2: Convert to fraction form
    69,101.30/102,938.81 = 67,010.49/x
  3. Step 3: Cross multiply
    69,101.30x = 102,938.81 × 67,010.49
  4. Step 4: Simplify right side
    69,101.30x = 6,897,979,763.06
  5. Step 5: Solve for x
    x = 6,897,979,763.06/69,101.30
  6. Step 6: Final answer
    x = 99,824.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.