Home / 66,396.24-91,586.52-39,520.80

Finding the Fourth Proportional to 66,396.24, 91,586.52 and 39,520.80

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Solution

The fourth proportional to 66,396.24, 91,586.52 and 39,520.80 is: 54,514.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,396.24 : 91,586.52 = 39,520.80 : x
  2. Step 2: Convert to fraction form
    66,396.24/91,586.52 = 39,520.80/x
  3. Step 3: Cross multiply
    66,396.24x = 91,586.52 × 39,520.80
  4. Step 4: Simplify right side
    66,396.24x = 3,619,572,539.62
  5. Step 5: Solve for x
    x = 3,619,572,539.62/66,396.24
  6. Step 6: Final answer
    x = 54,514.72

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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.