Home / 40,900.50-61,365.15-20,138.58

Finding the Fourth Proportional to 40,900.50, 61,365.15 and 20,138.58

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Solution

The fourth proportional to 40,900.50, 61,365.15 and 20,138.58 is: 30,214.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,900.50 : 61,365.15 = 20,138.58 : x
  2. Step 2: Convert to fraction form
    40,900.50/61,365.15 = 20,138.58/x
  3. Step 3: Cross multiply
    40,900.50x = 61,365.15 × 20,138.58
  4. Step 4: Simplify right side
    40,900.50x = 1,235,806,982.49
  5. Step 5: Solve for x
    x = 1,235,806,982.49/40,900.50
  6. Step 6: Final answer
    x = 30,214.96

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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.