Home / 66,135.72-91,267.32-35,920.92

Finding the Fourth Proportional to 66,135.72, 91,267.32 and 35,920.92

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Solution

The fourth proportional to 66,135.72, 91,267.32 and 35,920.92 is: 49,570.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,135.72 : 91,267.32 = 35,920.92 : x
  2. Step 2: Convert to fraction form
    66,135.72/91,267.32 = 35,920.92/x
  3. Step 3: Cross multiply
    66,135.72x = 91,267.32 × 35,920.92
  4. Step 4: Simplify right side
    66,135.72x = 3,278,406,100.33
  5. Step 5: Solve for x
    x = 3,278,406,100.33/66,135.72
  6. Step 6: Final answer
    x = 49,570.88

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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.