Home / 51,899.31-77,845.73-20,712.15

Finding the Fourth Proportional to 51,899.31, 77,845.73 and 20,712.15

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Solution

The fourth proportional to 51,899.31, 77,845.73 and 20,712.15 is: 31,066.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,899.31 : 77,845.73 = 20,712.15 : x
  2. Step 2: Convert to fraction form
    51,899.31/77,845.73 = 20,712.15/x
  3. Step 3: Cross multiply
    51,899.31x = 77,845.73 × 20,712.15
  4. Step 4: Simplify right side
    51,899.31x = 1,612,352,333.06
  5. Step 5: Solve for x
    x = 1,612,352,333.06/51,899.31
  6. Step 6: Final answer
    x = 31,066.93

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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.