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Finding the Fourth Proportional to 71,786.94, 99,153.03 and 52,639.08

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Solution

The fourth proportional to 71,786.94, 99,153.03 and 52,639.08 is: 72,705.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,786.94 : 99,153.03 = 52,639.08 : x
  2. Step 2: Convert to fraction form
    71,786.94/99,153.03 = 52,639.08/x
  3. Step 3: Cross multiply
    71,786.94x = 99,153.03 × 52,639.08
  4. Step 4: Simplify right side
    71,786.94x = 5,219,323,782.65
  5. Step 5: Solve for x
    x = 5,219,323,782.65/71,786.94
  6. Step 6: Final answer
    x = 72,705.76

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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.