Home / 72,170.31-108,353.63-40,602.58

Finding the Fourth Proportional to 72,170.31, 108,353.63 and 40,602.58

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Solution

The fourth proportional to 72,170.31, 108,353.63 and 40,602.58 is: 60,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,170.31 : 108,353.63 = 40,602.58 : x
  2. Step 2: Convert to fraction form
    72,170.31/108,353.63 = 40,602.58/x
  3. Step 3: Cross multiply
    72,170.31x = 108,353.63 × 40,602.58
  4. Step 4: Simplify right side
    72,170.31x = 4,399,436,930.37
  5. Step 5: Solve for x
    x = 4,399,436,930.37/72,170.31
  6. Step 6: Final answer
    x = 60,959.10

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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.