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Finding the Fourth Proportional to 84,620.93, 126,934.89 and 69,802.25

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Solution

The fourth proportional to 84,620.93, 126,934.89 and 69,802.25 is: 104,706.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,620.93 : 126,934.89 = 69,802.25 : x
  2. Step 2: Convert to fraction form
    84,620.93/126,934.89 = 69,802.25/x
  3. Step 3: Cross multiply
    84,620.93x = 126,934.89 × 69,802.25
  4. Step 4: Simplify right side
    84,620.93x = 8,860,340,290.83
  5. Step 5: Solve for x
    x = 8,860,340,290.83/84,620.93
  6. Step 6: Final answer
    x = 104,706.26

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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.