Home / 78,744.15-117,838.80-49,175.91

Finding the Fourth Proportional to 78,744.15, 117,838.80 and 49,175.91

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Solution

The fourth proportional to 78,744.15, 117,838.80 and 49,175.91 is: 73,590.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,744.15 : 117,838.80 = 49,175.91 : x
  2. Step 2: Convert to fraction form
    78,744.15/117,838.80 = 49,175.91/x
  3. Step 3: Cross multiply
    78,744.15x = 117,838.80 × 49,175.91
  4. Step 4: Simplify right side
    78,744.15x = 5,794,830,223.31
  5. Step 5: Solve for x
    x = 5,794,830,223.31/78,744.15
  6. Step 6: Final answer
    x = 73,590.61

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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.