Home / 66,191.22-91,357.18-39,328.57

Finding the Fourth Proportional to 66,191.22, 91,357.18 and 39,328.57

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Solution

The fourth proportional to 66,191.22, 91,357.18 and 39,328.57 is: 54,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,191.22 : 91,357.18 = 39,328.57 : x
  2. Step 2: Convert to fraction form
    66,191.22/91,357.18 = 39,328.57/x
  3. Step 3: Cross multiply
    66,191.22x = 91,357.18 × 39,328.57
  4. Step 4: Simplify right side
    66,191.22x = 3,592,946,595.20
  5. Step 5: Solve for x
    x = 3,592,946,595.20/66,191.22
  6. Step 6: Final answer
    x = 54,281.32

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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.