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Finding the Fourth Proportional to 84,574.26, 126,875.98 and 28,419.76

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Solution

The fourth proportional to 84,574.26, 126,875.98 and 28,419.76 is: 42,634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,574.26 : 126,875.98 = 28,419.76 : x
  2. Step 2: Convert to fraction form
    84,574.26/126,875.98 = 28,419.76/x
  3. Step 3: Cross multiply
    84,574.26x = 126,875.98 × 28,419.76
  4. Step 4: Simplify right side
    84,574.26x = 3,605,784,901.36
  5. Step 5: Solve for x
    x = 3,605,784,901.36/84,574.26
  6. Step 6: Final answer
    x = 42,634.54

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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.