Home / 66,995.20-92,445.36-39,766.96

Finding the Fourth Proportional to 66,995.20, 92,445.36 and 39,766.96

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Solution

The fourth proportional to 66,995.20, 92,445.36 and 39,766.96 is: 54,873.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,995.20 : 92,445.36 = 39,766.96 : x
  2. Step 2: Convert to fraction form
    66,995.20/92,445.36 = 39,766.96/x
  3. Step 3: Cross multiply
    66,995.20x = 92,445.36 × 39,766.96
  4. Step 4: Simplify right side
    66,995.20x = 3,676,270,933.31
  5. Step 5: Solve for x
    x = 3,676,270,933.31/66,995.20
  6. Step 6: Final answer
    x = 54,873.65

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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.