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Finding the Fourth Proportional to 53,111.69, 79,716.80 and 26,834.88

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Solution

The fourth proportional to 53,111.69, 79,716.80 and 26,834.88 is: 40,277.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,111.69 : 79,716.80 = 26,834.88 : x
  2. Step 2: Convert to fraction form
    53,111.69/79,716.80 = 26,834.88/x
  3. Step 3: Cross multiply
    53,111.69x = 79,716.80 × 26,834.88
  4. Step 4: Simplify right side
    53,111.69x = 2,139,190,829.07
  5. Step 5: Solve for x
    x = 2,139,190,829.07/53,111.69
  6. Step 6: Final answer
    x = 40,277.22

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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.