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Finding the Fourth Proportional to 84,622.68, 126,948.63 and 28,468.22

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Solution

The fourth proportional to 84,622.68, 126,948.63 and 28,468.22 is: 42,707.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,622.68 : 126,948.63 = 28,468.22 : x
  2. Step 2: Convert to fraction form
    84,622.68/126,948.63 = 28,468.22/x
  3. Step 3: Cross multiply
    84,622.68x = 126,948.63 × 28,468.22
  4. Step 4: Simplify right side
    84,622.68x = 3,614,000,892.80
  5. Step 5: Solve for x
    x = 3,614,000,892.80/84,622.68
  6. Step 6: Final answer
    x = 42,707.24

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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.