Home / 66,450.40-91,693.92-39,589.12

Finding the Fourth Proportional to 66,450.40, 91,693.92 and 39,589.12

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Solution

The fourth proportional to 66,450.40, 91,693.92 and 39,589.12 is: 54,628.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,450.40 : 91,693.92 = 39,589.12 : x
  2. Step 2: Convert to fraction form
    66,450.40/91,693.92 = 39,589.12/x
  3. Step 3: Cross multiply
    66,450.40x = 91,693.92 × 39,589.12
  4. Step 4: Simplify right side
    66,450.40x = 3,630,081,602.15
  5. Step 5: Solve for x
    x = 3,630,081,602.15/66,450.40
  6. Step 6: Final answer
    x = 54,628.44

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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.