Home / 39,770.71-54,883.95-21,865.85

Finding the Fourth Proportional to 39,770.71, 54,883.95 and 21,865.85

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Solution

The fourth proportional to 39,770.71, 54,883.95 and 21,865.85 is: 30,175.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,770.71 : 54,883.95 = 21,865.85 : x
  2. Step 2: Convert to fraction form
    39,770.71/54,883.95 = 21,865.85/x
  3. Step 3: Cross multiply
    39,770.71x = 54,883.95 × 21,865.85
  4. Step 4: Simplify right side
    39,770.71x = 1,200,084,218.11
  5. Step 5: Solve for x
    x = 1,200,084,218.11/39,770.71
  6. Step 6: Final answer
    x = 30,175.08

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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.