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Finding the Fourth Proportional to 98,311, 135,669.02 and 55,869.56

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Solution

The fourth proportional to 98,311, 135,669.02 and 55,869.56 is: 77,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,311 : 135,669.02 = 55,869.56 : x
  2. Step 2: Convert to fraction form
    98,311/135,669.02 = 55,869.56/x
  3. Step 3: Cross multiply
    98,311x = 135,669.02 × 55,869.56
  4. Step 4: Simplify right side
    98,311x = 7,579,768,453.03
  5. Step 5: Solve for x
    x = 7,579,768,453.03/98,311
  6. Step 6: Final answer
    x = 77,099.90

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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.