Home / 72,950.31-109,416.24-19,646.55

Finding the Fourth Proportional to 72,950.31, 109,416.24 and 19,646.55

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Solution

The fourth proportional to 72,950.31, 109,416.24 and 19,646.55 is: 29,467.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,950.31 : 109,416.24 = 19,646.55 : x
  2. Step 2: Convert to fraction form
    72,950.31/109,416.24 = 19,646.55/x
  3. Step 3: Cross multiply
    72,950.31x = 109,416.24 × 19,646.55
  4. Step 4: Simplify right side
    72,950.31x = 2,149,651,629.97
  5. Step 5: Solve for x
    x = 2,149,651,629.97/72,950.31
  6. Step 6: Final answer
    x = 29,467.34

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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.