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Finding the Fourth Proportional to 85,246.80, 127,907.06 and 45,757.78

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Solution

The fourth proportional to 85,246.80, 127,907.06 and 45,757.78 is: 68,656.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,246.80 : 127,907.06 = 45,757.78 : x
  2. Step 2: Convert to fraction form
    85,246.80/127,907.06 = 45,757.78/x
  3. Step 3: Cross multiply
    85,246.80x = 127,907.06 × 45,757.78
  4. Step 4: Simplify right side
    85,246.80x = 5,852,743,111.93
  5. Step 5: Solve for x
    x = 5,852,743,111.93/85,246.80
  6. Step 6: Final answer
    x = 68,656.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.