Home / 84,631.60-126,947.40-21,451.60

Finding the Fourth Proportional to 84,631.60, 126,947.40 and 21,451.60

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Solution

The fourth proportional to 84,631.60, 126,947.40 and 21,451.60 is: 32,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,631.60 : 126,947.40 = 21,451.60 : x
  2. Step 2: Convert to fraction form
    84,631.60/126,947.40 = 21,451.60/x
  3. Step 3: Cross multiply
    84,631.60x = 126,947.40 × 21,451.60
  4. Step 4: Simplify right side
    84,631.60x = 2,723,224,845.84
  5. Step 5: Solve for x
    x = 2,723,224,845.84/84,631.60
  6. Step 6: Final answer
    x = 32,177.40

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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.