Home / 51,903.06-77,851.35-20,715.90

Finding the Fourth Proportional to 51,903.06, 77,851.35 and 20,715.90

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Solution

The fourth proportional to 51,903.06, 77,851.35 and 20,715.90 is: 31,072.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,903.06 : 77,851.35 = 20,715.90 : x
  2. Step 2: Convert to fraction form
    51,903.06/77,851.35 = 20,715.90/x
  3. Step 3: Cross multiply
    51,903.06x = 77,851.35 × 20,715.90
  4. Step 4: Simplify right side
    51,903.06x = 1,612,760,781.47
  5. Step 5: Solve for x
    x = 1,612,760,781.47/51,903.06
  6. Step 6: Final answer
    x = 31,072.56

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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.