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Finding the Fourth Proportional to 79,869.32, 119,722.87 and 51,807.22

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Solution

The fourth proportional to 79,869.32, 119,722.87 and 51,807.22 is: 77,658.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,869.32 : 119,722.87 = 51,807.22 : x
  2. Step 2: Convert to fraction form
    79,869.32/119,722.87 = 51,807.22/x
  3. Step 3: Cross multiply
    79,869.32x = 119,722.87 × 51,807.22
  4. Step 4: Simplify right side
    79,869.32x = 6,202,509,065.12
  5. Step 5: Solve for x
    x = 6,202,509,065.12/79,869.32
  6. Step 6: Final answer
    x = 77,658.22

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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.