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Finding the Fourth Proportional to 84,615.08, 126,833.30 and 28,401.88

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Solution

The fourth proportional to 84,615.08, 126,833.30 and 28,401.88 is: 42,572.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,615.08 : 126,833.30 = 28,401.88 : x
  2. Step 2: Convert to fraction form
    84,615.08/126,833.30 = 28,401.88/x
  3. Step 3: Cross multiply
    84,615.08x = 126,833.30 × 28,401.88
  4. Step 4: Simplify right side
    84,615.08x = 3,602,304,166.60
  5. Step 5: Solve for x
    x = 3,602,304,166.60/84,615.08
  6. Step 6: Final answer
    x = 42,572.84

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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.