Home / 66,001.75-91,045.15-39,117.85

Finding the Fourth Proportional to 66,001.75, 91,045.15 and 39,117.85

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Solution

The fourth proportional to 66,001.75, 91,045.15 and 39,117.85 is: 53,960.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,001.75 : 91,045.15 = 39,117.85 : x
  2. Step 2: Convert to fraction form
    66,001.75/91,045.15 = 39,117.85/x
  3. Step 3: Cross multiply
    66,001.75x = 91,045.15 × 39,117.85
  4. Step 4: Simplify right side
    66,001.75x = 3,561,490,520.93
  5. Step 5: Solve for x
    x = 3,561,490,520.93/66,001.75
  6. Step 6: Final answer
    x = 53,960.55

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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.