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Finding the Fourth Proportional to 69,254.33, 103,885.54 and 21,870.88

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Solution

The fourth proportional to 69,254.33, 103,885.54 and 21,870.88 is: 32,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,254.33 : 103,885.54 = 21,870.88 : x
  2. Step 2: Convert to fraction form
    69,254.33/103,885.54 = 21,870.88/x
  3. Step 3: Cross multiply
    69,254.33x = 103,885.54 × 21,870.88
  4. Step 4: Simplify right side
    69,254.33x = 2,272,067,864.68
  5. Step 5: Solve for x
    x = 2,272,067,864.68/69,254.33
  6. Step 6: Final answer
    x = 32,807.60

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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.