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Finding the Fourth Proportional to 45,687.40, 68,531.10 and 45,032.20

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Solution

The fourth proportional to 45,687.40, 68,531.10 and 45,032.20 is: 67,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,687.40 : 68,531.10 = 45,032.20 : x
  2. Step 2: Convert to fraction form
    45,687.40/68,531.10 = 45,032.20/x
  3. Step 3: Cross multiply
    45,687.40x = 68,531.10 × 45,032.20
  4. Step 4: Simplify right side
    45,687.40x = 3,086,106,201.42
  5. Step 5: Solve for x
    x = 3,086,106,201.42/45,687.40
  6. Step 6: Final answer
    x = 67,548.30

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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.