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Finding the Fourth Proportional to 72,858.97, 100,542.67 and 40,592.83

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Solution

The fourth proportional to 72,858.97, 100,542.67 and 40,592.83 is: 56,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,858.97 : 100,542.67 = 40,592.83 : x
  2. Step 2: Convert to fraction form
    72,858.97/100,542.67 = 40,592.83/x
  3. Step 3: Cross multiply
    72,858.97x = 100,542.67 × 40,592.83
  4. Step 4: Simplify right side
    72,858.97x = 4,081,311,511.06
  5. Step 5: Solve for x
    x = 4,081,311,511.06/72,858.97
  6. Step 6: Final answer
    x = 56,016.60

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1.5x scale

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.