Home / 45,362.74-68,020.80-20,381.38

Finding the Fourth Proportional to 45,362.74, 68,020.80 and 20,381.38

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Solution

The fourth proportional to 45,362.74, 68,020.80 and 20,381.38 is: 30,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,362.74 : 68,020.80 = 20,381.38 : x
  2. Step 2: Convert to fraction form
    45,362.74/68,020.80 = 20,381.38/x
  3. Step 3: Cross multiply
    45,362.74x = 68,020.80 × 20,381.38
  4. Step 4: Simplify right side
    45,362.74x = 1,386,357,772.70
  5. Step 5: Solve for x
    x = 1,386,357,772.70/45,362.74
  6. Step 6: Final answer
    x = 30,561.60

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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.