Home / 66,040.50-91,067.37-56,511.92

Finding the Fourth Proportional to 66,040.50, 91,067.37 and 56,511.92

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Solution

The fourth proportional to 66,040.50, 91,067.37 and 56,511.92 is: 77,927.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,040.50 : 91,067.37 = 56,511.92 : x
  2. Step 2: Convert to fraction form
    66,040.50/91,067.37 = 56,511.92/x
  3. Step 3: Cross multiply
    66,040.50x = 91,067.37 × 56,511.92
  4. Step 4: Simplify right side
    66,040.50x = 5,146,391,260.79
  5. Step 5: Solve for x
    x = 5,146,391,260.79/66,040.50
  6. Step 6: Final answer
    x = 77,927.81

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1.5x scale

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.