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Finding the Fourth Proportional to 69,103.48, 103,521.60 and 57,876.88

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Solution

The fourth proportional to 69,103.48, 103,521.60 and 57,876.88 is: 86,703.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,103.48 : 103,521.60 = 57,876.88 : x
  2. Step 2: Convert to fraction form
    69,103.48/103,521.60 = 57,876.88/x
  3. Step 3: Cross multiply
    69,103.48x = 103,521.60 × 57,876.88
  4. Step 4: Simplify right side
    69,103.48x = 5,991,507,220.61
  5. Step 5: Solve for x
    x = 5,991,507,220.61/69,103.48
  6. Step 6: Final answer
    x = 86,703.41

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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.