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Finding the Fourth Proportional to 69,812.58, 104,679.19 and 47,652.78

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Solution

The fourth proportional to 69,812.58, 104,679.19 and 47,652.78 is: 71,452.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,812.58 : 104,679.19 = 47,652.78 : x
  2. Step 2: Convert to fraction form
    69,812.58/104,679.19 = 47,652.78/x
  3. Step 3: Cross multiply
    69,812.58x = 104,679.19 × 47,652.78
  4. Step 4: Simplify right side
    69,812.58x = 4,988,254,411.65
  5. Step 5: Solve for x
    x = 4,988,254,411.65/69,812.58
  6. Step 6: Final answer
    x = 71,452.09

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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.