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Finding the Fourth Proportional to 52,339.86, 78,509.39 and 17,279.42

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Solution

The fourth proportional to 52,339.86, 78,509.39 and 17,279.42 is: 25,918.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,339.86 : 78,509.39 = 17,279.42 : x
  2. Step 2: Convert to fraction form
    52,339.86/78,509.39 = 17,279.42/x
  3. Step 3: Cross multiply
    52,339.86x = 78,509.39 × 17,279.42
  4. Step 4: Simplify right side
    52,339.86x = 1,356,596,244.81
  5. Step 5: Solve for x
    x = 1,356,596,244.81/52,339.86
  6. Step 6: Final answer
    x = 25,918.99

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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.