Home / 42,479.36-63,732-21,717.44

Finding the Fourth Proportional to 42,479.36, 63,732 and 21,717.44

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Solution

The fourth proportional to 42,479.36, 63,732 and 21,717.44 is: 32,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,479.36 : 63,732 = 21,717.44 : x
  2. Step 2: Convert to fraction form
    42,479.36/63,732 = 21,717.44/x
  3. Step 3: Cross multiply
    42,479.36x = 63,732 × 21,717.44
  4. Step 4: Simplify right side
    42,479.36x = 1,384,095,886.08
  5. Step 5: Solve for x
    x = 1,384,095,886.08/42,479.36
  6. Step 6: Final answer
    x = 32,582.79

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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.