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Finding the Fourth Proportional to 53,316.73, 79,976.71 and 18,255.88

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Solution

The fourth proportional to 53,316.73, 79,976.71 and 18,255.88 is: 27,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,316.73 : 79,976.71 = 18,255.88 : x
  2. Step 2: Convert to fraction form
    53,316.73/79,976.71 = 18,255.88/x
  3. Step 3: Cross multiply
    53,316.73x = 79,976.71 × 18,255.88
  4. Step 4: Simplify right side
    53,316.73x = 1,460,044,820.67
  5. Step 5: Solve for x
    x = 1,460,044,820.67/53,316.73
  6. Step 6: Final answer
    x = 27,384.37

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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.