Home / 40,219.40-60,278.70-20,505.80

Finding the Fourth Proportional to 40,219.40, 60,278.70 and 20,505.80

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Solution

The fourth proportional to 40,219.40, 60,278.70 and 20,505.80 is: 30,733.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,219.40 : 60,278.70 = 20,505.80 : x
  2. Step 2: Convert to fraction form
    40,219.40/60,278.70 = 20,505.80/x
  3. Step 3: Cross multiply
    40,219.40x = 60,278.70 × 20,505.80
  4. Step 4: Simplify right side
    40,219.40x = 1,236,062,966.46
  5. Step 5: Solve for x
    x = 1,236,062,966.46/40,219.40
  6. Step 6: Final answer
    x = 30,733.00

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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.