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Finding the Fourth Proportional to 45,912.30, 68,860.89 and 42,923.58

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Solution

The fourth proportional to 45,912.30, 68,860.89 and 42,923.58 is: 64,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,912.30 : 68,860.89 = 42,923.58 : x
  2. Step 2: Convert to fraction form
    45,912.30/68,860.89 = 42,923.58/x
  3. Step 3: Cross multiply
    45,912.30x = 68,860.89 × 42,923.58
  4. Step 4: Simplify right side
    45,912.30x = 2,955,755,920.79
  5. Step 5: Solve for x
    x = 2,955,755,920.79/45,912.30
  6. Step 6: Final answer
    x = 64,378.30

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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.