Home / 45,868.14-68,743.89-20,921.76

Finding the Fourth Proportional to 45,868.14, 68,743.89 and 20,921.76

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Solution

The fourth proportional to 45,868.14, 68,743.89 and 20,921.76 is: 31,356.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,868.14 : 68,743.89 = 20,921.76 : x
  2. Step 2: Convert to fraction form
    45,868.14/68,743.89 = 20,921.76/x
  3. Step 3: Cross multiply
    45,868.14x = 68,743.89 × 20,921.76
  4. Step 4: Simplify right side
    45,868.14x = 1,438,243,168.05
  5. Step 5: Solve for x
    x = 1,438,243,168.05/45,868.14
  6. Step 6: Final answer
    x = 31,356.04

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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.