Home / 66,205.85-91,377.35-39,343.16

Finding the Fourth Proportional to 66,205.85, 91,377.35 and 39,343.16

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Solution

The fourth proportional to 66,205.85, 91,377.35 and 39,343.16 is: 54,301.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,205.85 : 91,377.35 = 39,343.16 : x
  2. Step 2: Convert to fraction form
    66,205.85/91,377.35 = 39,343.16/x
  3. Step 3: Cross multiply
    66,205.85x = 91,377.35 × 39,343.16
  4. Step 4: Simplify right side
    66,205.85x = 3,595,073,733.15
  5. Step 5: Solve for x
    x = 3,595,073,733.15/66,205.85
  6. Step 6: Final answer
    x = 54,301.46

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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.