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Finding the Fourth Proportional to 71,259.82, 106,859.66 and 21,347.01

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Solution

The fourth proportional to 71,259.82, 106,859.66 and 21,347.01 is: 32,011.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,259.82 : 106,859.66 = 21,347.01 : x
  2. Step 2: Convert to fraction form
    71,259.82/106,859.66 = 21,347.01/x
  3. Step 3: Cross multiply
    71,259.82x = 106,859.66 × 21,347.01
  4. Step 4: Simplify right side
    71,259.82x = 2,281,134,123.88
  5. Step 5: Solve for x
    x = 2,281,134,123.88/71,259.82
  6. Step 6: Final answer
    x = 32,011.51

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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.