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Finding the Fourth Proportional to 52,873.71, 79,292.12 and 21,275.59

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Solution

The fourth proportional to 52,873.71, 79,292.12 and 21,275.59 is: 31,905.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,873.71 : 79,292.12 = 21,275.59 : x
  2. Step 2: Convert to fraction form
    52,873.71/79,292.12 = 21,275.59/x
  3. Step 3: Cross multiply
    52,873.71x = 79,292.12 × 21,275.59
  4. Step 4: Simplify right side
    52,873.71x = 1,686,986,635.35
  5. Step 5: Solve for x
    x = 1,686,986,635.35/52,873.71
  6. Step 6: Final answer
    x = 31,905.96

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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.