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Finding the Fourth Proportional to 84,677.84, 126,996.18 and 28,503.32

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Solution

The fourth proportional to 84,677.84, 126,996.18 and 28,503.32 is: 42,748.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,677.84 : 126,996.18 = 28,503.32 : x
  2. Step 2: Convert to fraction form
    84,677.84/126,996.18 = 28,503.32/x
  3. Step 3: Cross multiply
    84,677.84x = 126,996.18 × 28,503.32
  4. Step 4: Simplify right side
    84,677.84x = 3,619,812,122.34
  5. Step 5: Solve for x
    x = 3,619,812,122.34/84,677.84
  6. Step 6: Final answer
    x = 42,748.05

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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.