Home / 50,071.28-75,134.61-20,509.88

Finding the Fourth Proportional to 50,071.28, 75,134.61 and 20,509.88

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Solution

The fourth proportional to 50,071.28, 75,134.61 and 20,509.88 is: 30,776.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,071.28 : 75,134.61 = 20,509.88 : x
  2. Step 2: Convert to fraction form
    50,071.28/75,134.61 = 20,509.88/x
  3. Step 3: Cross multiply
    50,071.28x = 75,134.61 × 20,509.88
  4. Step 4: Simplify right side
    50,071.28x = 1,541,001,459.27
  5. Step 5: Solve for x
    x = 1,541,001,459.27/50,071.28
  6. Step 6: Final answer
    x = 30,776.16

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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.