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Finding the Fourth Proportional to 71,807.40, 107,726.62 and 21,886.20

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Solution

The fourth proportional to 71,807.40, 107,726.62 and 21,886.20 is: 32,834.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,807.40 : 107,726.62 = 21,886.20 : x
  2. Step 2: Convert to fraction form
    71,807.40/107,726.62 = 21,886.20/x
  3. Step 3: Cross multiply
    71,807.40x = 107,726.62 × 21,886.20
  4. Step 4: Simplify right side
    71,807.40x = 2,357,726,350.64
  5. Step 5: Solve for x
    x = 2,357,726,350.64/71,807.40
  6. Step 6: Final answer
    x = 32,834.03

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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.