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Finding the Fourth Proportional to 81,298.76, 121,944.48 and 33,894.32

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Solution

The fourth proportional to 81,298.76, 121,944.48 and 33,894.32 is: 50,839.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,298.76 : 121,944.48 = 33,894.32 : x
  2. Step 2: Convert to fraction form
    81,298.76/121,944.48 = 33,894.32/x
  3. Step 3: Cross multiply
    81,298.76x = 121,944.48 × 33,894.32
  4. Step 4: Simplify right side
    81,298.76x = 4,133,225,227.35
  5. Step 5: Solve for x
    x = 4,133,225,227.35/81,298.76
  6. Step 6: Final answer
    x = 50,839.95

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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.