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Finding the Fourth Proportional to 74,010.80, 111,016.20 and 68,308.40

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Solution

The fourth proportional to 74,010.80, 111,016.20 and 68,308.40 is: 102,462.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,010.80 : 111,016.20 = 68,308.40 : x
  2. Step 2: Convert to fraction form
    74,010.80/111,016.20 = 68,308.40/x
  3. Step 3: Cross multiply
    74,010.80x = 111,016.20 × 68,308.40
  4. Step 4: Simplify right side
    74,010.80x = 7,583,338,996.08
  5. Step 5: Solve for x
    x = 7,583,338,996.08/74,010.80
  6. Step 6: Final answer
    x = 102,462.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.