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Finding the Fourth Proportional to 71,264.45, 106,866.59 and 21,351.64

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Solution

The fourth proportional to 71,264.45, 106,866.59 and 21,351.64 is: 32,018.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,264.45 : 106,866.59 = 21,351.64 : x
  2. Step 2: Convert to fraction form
    71,264.45/106,866.59 = 21,351.64/x
  3. Step 3: Cross multiply
    71,264.45x = 106,866.59 × 21,351.64
  4. Step 4: Simplify right side
    71,264.45x = 2,281,776,423.37
  5. Step 5: Solve for x
    x = 2,281,776,423.37/71,264.45
  6. Step 6: Final answer
    x = 32,018.44

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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.