Home / 78,916.88-108,904.64-43,106.90

Finding the Fourth Proportional to 78,916.88, 108,904.64 and 43,106.90

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Solution

The fourth proportional to 78,916.88, 108,904.64 and 43,106.90 is: 59,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,916.88 : 108,904.64 = 43,106.90 : x
  2. Step 2: Convert to fraction form
    78,916.88/108,904.64 = 43,106.90/x
  3. Step 3: Cross multiply
    78,916.88x = 108,904.64 × 43,106.90
  4. Step 4: Simplify right side
    78,916.88x = 4,694,540,665.96
  5. Step 5: Solve for x
    x = 4,694,540,665.96/78,916.88
  6. Step 6: Final answer
    x = 59,487.16

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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.