Home / 66,426.30-91,481.67-64,974.78

Finding the Fourth Proportional to 66,426.30, 91,481.67 and 64,974.78

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Solution

The fourth proportional to 66,426.30, 91,481.67 and 64,974.78 is: 89,482.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,426.30 : 91,481.67 = 64,974.78 : x
  2. Step 2: Convert to fraction form
    66,426.30/91,481.67 = 64,974.78/x
  3. Step 3: Cross multiply
    66,426.30x = 91,481.67 × 64,974.78
  4. Step 4: Simplify right side
    66,426.30x = 5,944,001,382.28
  5. Step 5: Solve for x
    x = 5,944,001,382.28/66,426.30
  6. Step 6: Final answer
    x = 89,482.65

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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.