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Finding the Fourth Proportional to 45,641.78, 68,471.93 and 19,346.45

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Solution

The fourth proportional to 45,641.78, 68,471.93 and 19,346.45 is: 29,023.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,641.78 : 68,471.93 = 19,346.45 : x
  2. Step 2: Convert to fraction form
    45,641.78/68,471.93 = 19,346.45/x
  3. Step 3: Cross multiply
    45,641.78x = 68,471.93 × 19,346.45
  4. Step 4: Simplify right side
    45,641.78x = 1,324,688,476.15
  5. Step 5: Solve for x
    x = 1,324,688,476.15/45,641.78
  6. Step 6: Final answer
    x = 29,023.59

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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.