Home / 72,343.19-99,834.32-40,078.77

Finding the Fourth Proportional to 72,343.19, 99,834.32 and 40,078.77

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Solution

The fourth proportional to 72,343.19, 99,834.32 and 40,078.77 is: 55,309.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,343.19 : 99,834.32 = 40,078.77 : x
  2. Step 2: Convert to fraction form
    72,343.19/99,834.32 = 40,078.77/x
  3. Step 3: Cross multiply
    72,343.19x = 99,834.32 × 40,078.77
  4. Step 4: Simplify right side
    72,343.19x = 4,001,236,475.20
  5. Step 5: Solve for x
    x = 4,001,236,475.20/72,343.19
  6. Step 6: Final answer
    x = 55,309.09

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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.