Home / 71,018.08-106,539.43-31,578.27

Finding the Fourth Proportional to 71,018.08, 106,539.43 and 31,578.27

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Solution

The fourth proportional to 71,018.08, 106,539.43 and 31,578.27 is: 47,372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,018.08 : 106,539.43 = 31,578.27 : x
  2. Step 2: Convert to fraction form
    71,018.08/106,539.43 = 31,578.27/x
  3. Step 3: Cross multiply
    71,018.08x = 106,539.43 × 31,578.27
  4. Step 4: Simplify right side
    71,018.08x = 3,364,330,728.29
  5. Step 5: Solve for x
    x = 3,364,330,728.29/71,018.08
  6. Step 6: Final answer
    x = 47,372.88

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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.