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Finding the Fourth Proportional to 77,079.56, 115,510.68 and 36,510.02

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Solution

The fourth proportional to 77,079.56, 115,510.68 and 36,510.02 is: 54,713.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,079.56 : 115,510.68 = 36,510.02 : x
  2. Step 2: Convert to fraction form
    77,079.56/115,510.68 = 36,510.02/x
  3. Step 3: Cross multiply
    77,079.56x = 115,510.68 × 36,510.02
  4. Step 4: Simplify right side
    77,079.56x = 4,217,297,237.01
  5. Step 5: Solve for x
    x = 4,217,297,237.01/77,079.56
  6. Step 6: Final answer
    x = 54,713.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.