Home / 74,072.90-111,171.57-69,402.04

Finding the Fourth Proportional to 74,072.90, 111,171.57 and 69,402.04

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Solution

The fourth proportional to 74,072.90, 111,171.57 and 69,402.04 is: 104,161.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,072.90 : 111,171.57 = 69,402.04 : x
  2. Step 2: Convert to fraction form
    74,072.90/111,171.57 = 69,402.04/x
  3. Step 3: Cross multiply
    74,072.90x = 111,171.57 × 69,402.04
  4. Step 4: Simplify right side
    74,072.90x = 7,715,533,192.14
  5. Step 5: Solve for x
    x = 7,715,533,192.14/74,072.90
  6. Step 6: Final answer
    x = 104,161.35

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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.