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Finding the Fourth Proportional to 53,159.50, 79,772.62 and 21,569.68

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Solution

The fourth proportional to 53,159.50, 79,772.62 and 21,569.68 is: 32,368.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,159.50 : 79,772.62 = 21,569.68 : x
  2. Step 2: Convert to fraction form
    53,159.50/79,772.62 = 21,569.68/x
  3. Step 3: Cross multiply
    53,159.50x = 79,772.62 × 21,569.68
  4. Step 4: Simplify right side
    53,159.50x = 1,720,670,257.42
  5. Step 5: Solve for x
    x = 1,720,670,257.42/53,159.50
  6. Step 6: Final answer
    x = 32,368.07

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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.