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Finding the Fourth Proportional to 72,855.60, 100,542.41 and 40,592.36

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Solution

The fourth proportional to 72,855.60, 100,542.41 and 40,592.36 is: 56,018.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,855.60 : 100,542.41 = 40,592.36 : x
  2. Step 2: Convert to fraction form
    72,855.60/100,542.41 = 40,592.36/x
  3. Step 3: Cross multiply
    72,855.60x = 100,542.41 × 40,592.36
  4. Step 4: Simplify right side
    72,855.60x = 4,081,253,148.54
  5. Step 5: Solve for x
    x = 4,081,253,148.54/72,855.60
  6. Step 6: Final answer
    x = 56,018.39

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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.