Home / 66,048.32-91,129.12-57,648.96

Finding the Fourth Proportional to 66,048.32, 91,129.12 and 57,648.96

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Solution

The fourth proportional to 66,048.32, 91,129.12 and 57,648.96 is: 79,540.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,048.32 : 91,129.12 = 57,648.96 : x
  2. Step 2: Convert to fraction form
    66,048.32/91,129.12 = 57,648.96/x
  3. Step 3: Cross multiply
    66,048.32x = 91,129.12 × 57,648.96
  4. Step 4: Simplify right side
    66,048.32x = 5,253,498,993.72
  5. Step 5: Solve for x
    x = 5,253,498,993.72/66,048.32
  6. Step 6: Final answer
    x = 79,540.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.