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Finding the Fourth Proportional to 51,570.76, 77,311.41 and 19,959.06

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Solution

The fourth proportional to 51,570.76, 77,311.41 and 19,959.06 is: 29,921.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,570.76 : 77,311.41 = 19,959.06 : x
  2. Step 2: Convert to fraction form
    51,570.76/77,311.41 = 19,959.06/x
  3. Step 3: Cross multiply
    51,570.76x = 77,311.41 × 19,959.06
  4. Step 4: Simplify right side
    51,570.76x = 1,543,062,780.96
  5. Step 5: Solve for x
    x = 1,543,062,780.96/51,570.76
  6. Step 6: Final answer
    x = 29,921.28

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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.