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Finding the Fourth Proportional to 78,834.64, 108,792.16 and 43,025.44

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Solution

The fourth proportional to 78,834.64, 108,792.16 and 43,025.44 is: 59,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,834.64 : 108,792.16 = 43,025.44 : x
  2. Step 2: Convert to fraction form
    78,834.64/108,792.16 = 43,025.44/x
  3. Step 3: Cross multiply
    78,834.64x = 108,792.16 × 43,025.44
  4. Step 4: Simplify right side
    78,834.64x = 4,680,830,552.55
  5. Step 5: Solve for x
    x = 4,680,830,552.55/78,834.64
  6. Step 6: Final answer
    x = 59,375.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.