Home / 72,788.10-100,446.93-40,956.36

Finding the Fourth Proportional to 72,788.10, 100,446.93 and 40,956.36

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Solution

The fourth proportional to 72,788.10, 100,446.93 and 40,956.36 is: 56,519.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,788.10 : 100,446.93 = 40,956.36 : x
  2. Step 2: Convert to fraction form
    72,788.10/100,446.93 = 40,956.36/x
  3. Step 3: Cross multiply
    72,788.10x = 100,446.93 × 40,956.36
  4. Step 4: Simplify right side
    72,788.10x = 4,113,940,625.97
  5. Step 5: Solve for x
    x = 4,113,940,625.97/72,788.10
  6. Step 6: Final answer
    x = 56,519.41

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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.