Home / 78,717.68-118,066.80-34,375.04

Finding the Fourth Proportional to 78,717.68, 118,066.80 and 34,375.04

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Solution

The fourth proportional to 78,717.68, 118,066.80 and 34,375.04 is: 51,558.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,717.68 : 118,066.80 = 34,375.04 : x
  2. Step 2: Convert to fraction form
    78,717.68/118,066.80 = 34,375.04/x
  3. Step 3: Cross multiply
    78,717.68x = 118,066.80 × 34,375.04
  4. Step 4: Simplify right side
    78,717.68x = 4,058,550,972.67
  5. Step 5: Solve for x
    x = 4,058,550,972.67/78,717.68
  6. Step 6: Final answer
    x = 51,558.32

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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.