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Finding the Fourth Proportional to 98,520.84, 135,944.06 and 55,494.18

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Solution

The fourth proportional to 98,520.84, 135,944.06 and 55,494.18 is: 76,573.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,520.84 : 135,944.06 = 55,494.18 : x
  2. Step 2: Convert to fraction form
    98,520.84/135,944.06 = 55,494.18/x
  3. Step 3: Cross multiply
    98,520.84x = 135,944.06 × 55,494.18
  4. Step 4: Simplify right side
    98,520.84x = 7,544,103,858.10
  5. Step 5: Solve for x
    x = 7,544,103,858.10/98,520.84
  6. Step 6: Final answer
    x = 76,573.69

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1.5x scale

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.