Home / 71,727.84-107,621.64-38,439.36

Finding the Fourth Proportional to 71,727.84, 107,621.64 and 38,439.36

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Solution

The fourth proportional to 71,727.84, 107,621.64 and 38,439.36 is: 57,675.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,727.84 : 107,621.64 = 38,439.36 : x
  2. Step 2: Convert to fraction form
    71,727.84/107,621.64 = 38,439.36/x
  3. Step 3: Cross multiply
    71,727.84x = 107,621.64 × 38,439.36
  4. Step 4: Simplify right side
    71,727.84x = 4,136,906,963.75
  5. Step 5: Solve for x
    x = 4,136,906,963.75/71,727.84
  6. Step 6: Final answer
    x = 57,675.05

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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.