Home / 83,669.40-125,503.30-20,489.80

Finding the Fourth Proportional to 83,669.40, 125,503.30 and 20,489.80

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Solution

The fourth proportional to 83,669.40, 125,503.30 and 20,489.80 is: 30,734.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,669.40 : 125,503.30 = 20,489.80 : x
  2. Step 2: Convert to fraction form
    83,669.40/125,503.30 = 20,489.80/x
  3. Step 3: Cross multiply
    83,669.40x = 125,503.30 × 20,489.80
  4. Step 4: Simplify right side
    83,669.40x = 2,571,537,516.34
  5. Step 5: Solve for x
    x = 2,571,537,516.34/83,669.40
  6. Step 6: Final answer
    x = 30,734.50

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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.