Home / 78,511.97-117,799.44-28,595.52

Finding the Fourth Proportional to 78,511.97, 117,799.44 and 28,595.52

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Solution

The fourth proportional to 78,511.97, 117,799.44 and 28,595.52 is: 42,904.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,511.97 : 117,799.44 = 28,595.52 : x
  2. Step 2: Convert to fraction form
    78,511.97/117,799.44 = 28,595.52/x
  3. Step 3: Cross multiply
    78,511.97x = 117,799.44 × 28,595.52
  4. Step 4: Simplify right side
    78,511.97x = 3,368,536,242.51
  5. Step 5: Solve for x
    x = 3,368,536,242.51/78,511.97
  6. Step 6: Final answer
    x = 42,904.75

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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.