Home / 78,022.62-117,006.26-28,089.31

Finding the Fourth Proportional to 78,022.62, 117,006.26 and 28,089.31

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Solution

The fourth proportional to 78,022.62, 117,006.26 and 28,089.31 is: 42,124.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,022.62 : 117,006.26 = 28,089.31 : x
  2. Step 2: Convert to fraction form
    78,022.62/117,006.26 = 28,089.31/x
  3. Step 3: Cross multiply
    78,022.62x = 117,006.26 × 28,089.31
  4. Step 4: Simplify right side
    78,022.62x = 3,286,625,109.08
  5. Step 5: Solve for x
    x = 3,286,625,109.08/78,022.62
  6. Step 6: Final answer
    x = 42,124.00

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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.