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Finding the Fourth Proportional to 98,101.79, 135,364.32 and 61,797.59

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Solution

The fourth proportional to 98,101.79, 135,364.32 and 61,797.59 is: 85,270.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,101.79 : 135,364.32 = 61,797.59 : x
  2. Step 2: Convert to fraction form
    98,101.79/135,364.32 = 61,797.59/x
  3. Step 3: Cross multiply
    98,101.79x = 135,364.32 × 61,797.59
  4. Step 4: Simplify right side
    98,101.79x = 8,365,188,747.99
  5. Step 5: Solve for x
    x = 8,365,188,747.99/98,101.79
  6. Step 6: Final answer
    x = 85,270.50

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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.