Home / 83,675.40-125,512.30-20,495.80

Finding the Fourth Proportional to 83,675.40, 125,512.30 and 20,495.80

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Solution

The fourth proportional to 83,675.40, 125,512.30 and 20,495.80 is: 30,743.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,675.40 : 125,512.30 = 20,495.80 : x
  2. Step 2: Convert to fraction form
    83,675.40/125,512.30 = 20,495.80/x
  3. Step 3: Cross multiply
    83,675.40x = 125,512.30 × 20,495.80
  4. Step 4: Simplify right side
    83,675.40x = 2,572,474,998.34
  5. Step 5: Solve for x
    x = 2,572,474,998.34/83,675.40
  6. Step 6: Final answer
    x = 30,743.50

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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.