Home / 72,239.75-99,695.28-40,410.79

Finding the Fourth Proportional to 72,239.75, 99,695.28 and 40,410.79

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Solution

The fourth proportional to 72,239.75, 99,695.28 and 40,410.79 is: 55,769.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,239.75 : 99,695.28 = 40,410.79 : x
  2. Step 2: Convert to fraction form
    72,239.75/99,695.28 = 40,410.79/x
  3. Step 3: Cross multiply
    72,239.75x = 99,695.28 × 40,410.79
  4. Step 4: Simplify right side
    72,239.75x = 4,028,764,822.02
  5. Step 5: Solve for x
    x = 4,028,764,822.02/72,239.75
  6. Step 6: Final answer
    x = 55,769.36

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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.