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Finding the Fourth Proportional to 115,855.02, 159,882.35 and 65,554.02

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Solution

The fourth proportional to 115,855.02, 159,882.35 and 65,554.02 is: 90,465.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,855.02 : 159,882.35 = 65,554.02 : x
  2. Step 2: Convert to fraction form
    115,855.02/159,882.35 = 65,554.02/x
  3. Step 3: Cross multiply
    115,855.02x = 159,882.35 × 65,554.02
  4. Step 4: Simplify right side
    115,855.02x = 10,480,930,769.55
  5. Step 5: Solve for x
    x = 10,480,930,769.55/115,855.02
  6. Step 6: Final answer
    x = 90,465.92

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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.