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Finding the Fourth Proportional to 97,855.50, 135,040.68 and 53,143.50

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Solution

The fourth proportional to 97,855.50, 135,040.68 and 53,143.50 is: 73,338.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,855.50 : 135,040.68 = 53,143.50 : x
  2. Step 2: Convert to fraction form
    97,855.50/135,040.68 = 53,143.50/x
  3. Step 3: Cross multiply
    97,855.50x = 135,040.68 × 53,143.50
  4. Step 4: Simplify right side
    97,855.50x = 7,176,534,377.58
  5. Step 5: Solve for x
    x = 7,176,534,377.58/97,855.50
  6. Step 6: Final answer
    x = 73,338.08

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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.