Home / 78,840.84-118,186.06-26,213.48

Finding the Fourth Proportional to 78,840.84, 118,186.06 and 26,213.48

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Solution

The fourth proportional to 78,840.84, 118,186.06 and 26,213.48 is: 39,295.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,840.84 : 118,186.06 = 26,213.48 : x
  2. Step 2: Convert to fraction form
    78,840.84/118,186.06 = 26,213.48/x
  3. Step 3: Cross multiply
    78,840.84x = 118,186.06 × 26,213.48
  4. Step 4: Simplify right side
    78,840.84x = 3,098,067,920.09
  5. Step 5: Solve for x
    x = 3,098,067,920.09/78,840.84
  6. Step 6: Final answer
    x = 39,295.22

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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.