Home / 83,769.60-125,630.10-30,455.40

Finding the Fourth Proportional to 83,769.60, 125,630.10 and 30,455.40

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Solution

The fourth proportional to 83,769.60, 125,630.10 and 30,455.40 is: 45,674.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,769.60 : 125,630.10 = 30,455.40 : x
  2. Step 2: Convert to fraction form
    83,769.60/125,630.10 = 30,455.40/x
  3. Step 3: Cross multiply
    83,769.60x = 125,630.10 × 30,455.40
  4. Step 4: Simplify right side
    83,769.60x = 3,826,114,947.54
  5. Step 5: Solve for x
    x = 3,826,114,947.54/83,769.60
  6. Step 6: Final answer
    x = 45,674.27

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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.