Home / 72,935.28-109,393.19-20,340.36

Finding the Fourth Proportional to 72,935.28, 109,393.19 and 20,340.36

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Solution

The fourth proportional to 72,935.28, 109,393.19 and 20,340.36 is: 30,507.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,935.28 : 109,393.19 = 20,340.36 : x
  2. Step 2: Convert to fraction form
    72,935.28/109,393.19 = 20,340.36/x
  3. Step 3: Cross multiply
    72,935.28x = 109,393.19 × 20,340.36
  4. Step 4: Simplify right side
    72,935.28x = 2,225,096,319.18
  5. Step 5: Solve for x
    x = 2,225,096,319.18/72,935.28
  6. Step 6: Final answer
    x = 30,507.82

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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.