Home / 81,278.40-112,164.11-45,469.16

Finding the Fourth Proportional to 81,278.40, 112,164.11 and 45,469.16

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Solution

The fourth proportional to 81,278.40, 112,164.11 and 45,469.16 is: 62,747.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,278.40 : 112,164.11 = 45,469.16 : x
  2. Step 2: Convert to fraction form
    81,278.40/112,164.11 = 45,469.16/x
  3. Step 3: Cross multiply
    81,278.40x = 112,164.11 × 45,469.16
  4. Step 4: Simplify right side
    81,278.40x = 5,100,007,075.68
  5. Step 5: Solve for x
    x = 5,100,007,075.68/81,278.40
  6. Step 6: Final answer
    x = 62,747.39

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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.