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Finding the Fourth Proportional to 53,219.91, 79,860.78 and 19,963.14

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Solution

The fourth proportional to 53,219.91, 79,860.78 and 19,963.14 is: 29,956.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,219.91 : 79,860.78 = 19,963.14 : x
  2. Step 2: Convert to fraction form
    53,219.91/79,860.78 = 19,963.14/x
  3. Step 3: Cross multiply
    53,219.91x = 79,860.78 × 19,963.14
  4. Step 4: Simplify right side
    53,219.91x = 1,594,271,931.65
  5. Step 5: Solve for x
    x = 1,594,271,931.65/53,219.91
  6. Step 6: Final answer
    x = 29,956.31

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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.