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Finding the Fourth Proportional to 74,460.70, 111,691.05 and 66,166.30

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Solution

The fourth proportional to 74,460.70, 111,691.05 and 66,166.30 is: 99,249.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,460.70 : 111,691.05 = 66,166.30 : x
  2. Step 2: Convert to fraction form
    74,460.70/111,691.05 = 66,166.30/x
  3. Step 3: Cross multiply
    74,460.70x = 111,691.05 × 66,166.30
  4. Step 4: Simplify right side
    74,460.70x = 7,390,183,521.62
  5. Step 5: Solve for x
    x = 7,390,183,521.62/74,460.70
  6. Step 6: Final answer
    x = 99,249.45

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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.