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Finding the Fourth Proportional to 84,305.84, 126,362.76 and 28,132.76

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Solution

The fourth proportional to 84,305.84, 126,362.76 and 28,132.76 is: 42,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,305.84 : 126,362.76 = 28,132.76 : x
  2. Step 2: Convert to fraction form
    84,305.84/126,362.76 = 28,132.76/x
  3. Step 3: Cross multiply
    84,305.84x = 126,362.76 × 28,132.76
  4. Step 4: Simplify right side
    84,305.84x = 3,554,933,200.02
  5. Step 5: Solve for x
    x = 3,554,933,200.02/84,305.84
  6. Step 6: Final answer
    x = 42,167.10

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1.5x scale

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.