Home / 71,431.16-107,136.21-18,844.34

Finding the Fourth Proportional to 71,431.16, 107,136.21 and 18,844.34

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Solution

The fourth proportional to 71,431.16, 107,136.21 and 18,844.34 is: 28,263.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,431.16 : 107,136.21 = 18,844.34 : x
  2. Step 2: Convert to fraction form
    71,431.16/107,136.21 = 18,844.34/x
  3. Step 3: Cross multiply
    71,431.16x = 107,136.21 × 18,844.34
  4. Step 4: Simplify right side
    71,431.16x = 2,018,911,167.55
  5. Step 5: Solve for x
    x = 2,018,911,167.55/71,431.16
  6. Step 6: Final answer
    x = 28,263.73

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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.