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Finding the Fourth Proportional to 71,807.28, 107,714.96 and 21,889.02

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Solution

The fourth proportional to 71,807.28, 107,714.96 and 21,889.02 is: 32,834.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,807.28 : 107,714.96 = 21,889.02 : x
  2. Step 2: Convert to fraction form
    71,807.28/107,714.96 = 21,889.02/x
  3. Step 3: Cross multiply
    71,807.28x = 107,714.96 × 21,889.02
  4. Step 4: Simplify right side
    71,807.28x = 2,357,774,913.74
  5. Step 5: Solve for x
    x = 2,357,774,913.74/71,807.28
  6. Step 6: Final answer
    x = 32,834.76

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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.