Home / 79,431.45-109,542.27-53,975.98

Finding the Fourth Proportional to 79,431.45, 109,542.27 and 53,975.98

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Solution

The fourth proportional to 79,431.45, 109,542.27 and 53,975.98 is: 74,437.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,431.45 : 109,542.27 = 53,975.98 : x
  2. Step 2: Convert to fraction form
    79,431.45/109,542.27 = 53,975.98/x
  3. Step 3: Cross multiply
    79,431.45x = 109,542.27 × 53,975.98
  4. Step 4: Simplify right side
    79,431.45x = 5,912,651,374.67
  5. Step 5: Solve for x
    x = 5,912,651,374.67/79,431.45
  6. Step 6: Final answer
    x = 74,437.16

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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.