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Finding the Fourth Proportional to 71,395.32, 107,070.84 and 57,322.20

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Solution

The fourth proportional to 71,395.32, 107,070.84 and 57,322.20 is: 85,965.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,395.32 : 107,070.84 = 57,322.20 : x
  2. Step 2: Convert to fraction form
    71,395.32/107,070.84 = 57,322.20/x
  3. Step 3: Cross multiply
    71,395.32x = 107,070.84 × 57,322.20
  4. Step 4: Simplify right side
    71,395.32x = 6,137,536,104.65
  5. Step 5: Solve for x
    x = 6,137,536,104.65/71,395.32
  6. Step 6: Final answer
    x = 85,965.52

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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.