Home / 72,756.23-109,003.01-30,560.78

Finding the Fourth Proportional to 72,756.23, 109,003.01 and 30,560.78

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Solution

The fourth proportional to 72,756.23, 109,003.01 and 30,560.78 is: 45,786.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,756.23 : 109,003.01 = 30,560.78 : x
  2. Step 2: Convert to fraction form
    72,756.23/109,003.01 = 30,560.78/x
  3. Step 3: Cross multiply
    72,756.23x = 109,003.01 × 30,560.78
  4. Step 4: Simplify right side
    72,756.23x = 3,331,217,127.65
  5. Step 5: Solve for x
    x = 3,331,217,127.65/72,756.23
  6. Step 6: Final answer
    x = 45,786.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.