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Finding the Fourth Proportional to 71,130.08, 106,695.04 and 21,882.08

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Solution

The fourth proportional to 71,130.08, 106,695.04 and 21,882.08 is: 32,823.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,130.08 : 106,695.04 = 21,882.08 : x
  2. Step 2: Convert to fraction form
    71,130.08/106,695.04 = 21,882.08/x
  3. Step 3: Cross multiply
    71,130.08x = 106,695.04 × 21,882.08
  4. Step 4: Simplify right side
    71,130.08x = 2,334,709,400.88
  5. Step 5: Solve for x
    x = 2,334,709,400.88/71,130.08
  6. Step 6: Final answer
    x = 32,823.10

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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.