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Finding the Fourth Proportional to 72,284.70, 99,754.84 and 40,454.54

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Solution

The fourth proportional to 72,284.70, 99,754.84 and 40,454.54 is: 55,828.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,284.70 : 99,754.84 = 40,454.54 : x
  2. Step 2: Convert to fraction form
    72,284.70/99,754.84 = 40,454.54/x
  3. Step 3: Cross multiply
    72,284.70x = 99,754.84 × 40,454.54
  4. Step 4: Simplify right side
    72,284.70x = 4,035,536,164.97
  5. Step 5: Solve for x
    x = 4,035,536,164.97/72,284.70
  6. Step 6: Final answer
    x = 55,828.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.