Home / 74,357.10-111,211.65-66,516.30

Finding the Fourth Proportional to 74,357.10, 111,211.65 and 66,516.30

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Solution

The fourth proportional to 74,357.10, 111,211.65 and 66,516.30 is: 99,484.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,357.10 : 111,211.65 = 66,516.30 : x
  2. Step 2: Convert to fraction form
    74,357.10/111,211.65 = 66,516.30/x
  3. Step 3: Cross multiply
    74,357.10x = 111,211.65 × 66,516.30
  4. Step 4: Simplify right side
    74,357.10x = 7,397,387,474.90
  5. Step 5: Solve for x
    x = 7,397,387,474.90/74,357.10
  6. Step 6: Final answer
    x = 99,484.62

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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.