Home / 81,284.45-121,938.37-25,129.49

Finding the Fourth Proportional to 81,284.45, 121,938.37 and 25,129.49

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Solution

The fourth proportional to 81,284.45, 121,938.37 and 25,129.49 is: 37,697.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,284.45 : 121,938.37 = 25,129.49 : x
  2. Step 2: Convert to fraction form
    81,284.45/121,938.37 = 25,129.49/x
  3. Step 3: Cross multiply
    81,284.45x = 121,938.37 × 25,129.49
  4. Step 4: Simplify right side
    81,284.45x = 3,064,248,377.02
  5. Step 5: Solve for x
    x = 3,064,248,377.02/81,284.45
  6. Step 6: Final answer
    x = 37,697.84

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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.