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Finding the Fourth Proportional to 67,980.36, 101,970.68 and 25,850.56

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Solution

The fourth proportional to 67,980.36, 101,970.68 and 25,850.56 is: 38,775.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,980.36 : 101,970.68 = 25,850.56 : x
  2. Step 2: Convert to fraction form
    67,980.36/101,970.68 = 25,850.56/x
  3. Step 3: Cross multiply
    67,980.36x = 101,970.68 × 25,850.56
  4. Step 4: Simplify right side
    67,980.36x = 2,635,999,181.58
  5. Step 5: Solve for x
    x = 2,635,999,181.58/67,980.36
  6. Step 6: Final answer
    x = 38,775.89

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1.5x scale

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.