Home / 78,885.09-108,860.36-43,076.61

Finding the Fourth Proportional to 78,885.09, 108,860.36 and 43,076.61

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Solution

The fourth proportional to 78,885.09, 108,860.36 and 43,076.61 is: 59,445.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,885.09 : 108,860.36 = 43,076.61 : x
  2. Step 2: Convert to fraction form
    78,885.09/108,860.36 = 43,076.61/x
  3. Step 3: Cross multiply
    78,885.09x = 108,860.36 × 43,076.61
  4. Step 4: Simplify right side
    78,885.09x = 4,689,335,056.80
  5. Step 5: Solve for x
    x = 4,689,335,056.80/78,885.09
  6. Step 6: Final answer
    x = 59,445.14

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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.