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Finding the Fourth Proportional to 115,329.80, 172,937.10 and 52,929.80

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Solution

The fourth proportional to 115,329.80, 172,937.10 and 52,929.80 is: 79,368.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,329.80 : 172,937.10 = 52,929.80 : x
  2. Step 2: Convert to fraction form
    115,329.80/172,937.10 = 52,929.80/x
  3. Step 3: Cross multiply
    115,329.80x = 172,937.10 × 52,929.80
  4. Step 4: Simplify right side
    115,329.80x = 9,153,526,115.58
  5. Step 5: Solve for x
    x = 9,153,526,115.58/115,329.80
  6. Step 6: Final answer
    x = 79,368.26

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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.