Home / 74,073.40-111,172.32-69,402.54

Finding the Fourth Proportional to 74,073.40, 111,172.32 and 69,402.54

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Solution

The fourth proportional to 74,073.40, 111,172.32 and 69,402.54 is: 104,162.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,073.40 : 111,172.32 = 69,402.54 : x
  2. Step 2: Convert to fraction form
    74,073.40/111,172.32 = 69,402.54/x
  3. Step 3: Cross multiply
    74,073.40x = 111,172.32 × 69,402.54
  4. Step 4: Simplify right side
    74,073.40x = 7,715,641,385.69
  5. Step 5: Solve for x
    x = 7,715,641,385.69/74,073.40
  6. Step 6: Final answer
    x = 104,162.11

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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.