Home / 66,109.53-91,221.97-38,886.85

Finding the Fourth Proportional to 66,109.53, 91,221.97 and 38,886.85

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Solution

The fourth proportional to 66,109.53, 91,221.97 and 38,886.85 is: 53,658.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,109.53 : 91,221.97 = 38,886.85 : x
  2. Step 2: Convert to fraction form
    66,109.53/91,221.97 = 38,886.85/x
  3. Step 3: Cross multiply
    66,109.53x = 91,221.97 × 38,886.85
  4. Step 4: Simplify right side
    66,109.53x = 3,547,334,413.55
  5. Step 5: Solve for x
    x = 3,547,334,413.55/66,109.53
  6. Step 6: Final answer
    x = 53,658.44

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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.