Home / 78,295.14-117,432.18-22,139.73

Finding the Fourth Proportional to 78,295.14, 117,432.18 and 22,139.73

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Solution

The fourth proportional to 78,295.14, 117,432.18 and 22,139.73 is: 33,206.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,295.14 : 117,432.18 = 22,139.73 : x
  2. Step 2: Convert to fraction form
    78,295.14/117,432.18 = 22,139.73/x
  3. Step 3: Cross multiply
    78,295.14x = 117,432.18 × 22,139.73
  4. Step 4: Simplify right side
    78,295.14x = 2,599,916,758.51
  5. Step 5: Solve for x
    x = 2,599,916,758.51/78,295.14
  6. Step 6: Final answer
    x = 33,206.62

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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.