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Finding the Fourth Proportional to 78,841.64, 108,801.88 and 43,032.52

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Solution

The fourth proportional to 78,841.64, 108,801.88 and 43,032.52 is: 59,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,841.64 : 108,801.88 = 43,032.52 : x
  2. Step 2: Convert to fraction form
    78,841.64/108,801.88 = 43,032.52/x
  3. Step 3: Cross multiply
    78,841.64x = 108,801.88 × 43,032.52
  4. Step 4: Simplify right side
    78,841.64x = 4,682,019,077.14
  5. Step 5: Solve for x
    x = 4,682,019,077.14/78,841.64
  6. Step 6: Final answer
    x = 59,385.11

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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.