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Finding the Fourth Proportional to 48,006.15, 71,978.39 and 19,945.59

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Solution

The fourth proportional to 48,006.15, 71,978.39 and 19,945.59 is: 29,905.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,006.15 : 71,978.39 = 19,945.59 : x
  2. Step 2: Convert to fraction form
    48,006.15/71,978.39 = 19,945.59/x
  3. Step 3: Cross multiply
    48,006.15x = 71,978.39 × 19,945.59
  4. Step 4: Simplify right side
    48,006.15x = 1,435,651,160.95
  5. Step 5: Solve for x
    x = 1,435,651,160.95/48,006.15
  6. Step 6: Final answer
    x = 29,905.57

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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.