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Finding the Fourth Proportional to 53,115.81, 79,722.99 and 26,839.01

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Solution

The fourth proportional to 53,115.81, 79,722.99 and 26,839.01 is: 40,283.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,115.81 : 79,722.99 = 26,839.01 : x
  2. Step 2: Convert to fraction form
    53,115.81/79,722.99 = 26,839.01/x
  3. Step 3: Cross multiply
    53,115.81x = 79,722.99 × 26,839.01
  4. Step 4: Simplify right side
    53,115.81x = 2,139,685,727.22
  5. Step 5: Solve for x
    x = 2,139,685,727.22/53,115.81
  6. Step 6: Final answer
    x = 40,283.41

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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.