Home / 78,319.07-117,478.60-19,154.03

Finding the Fourth Proportional to 78,319.07, 117,478.60 and 19,154.03

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Solution

The fourth proportional to 78,319.07, 117,478.60 and 19,154.03 is: 28,731.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,319.07 : 117,478.60 = 19,154.03 : x
  2. Step 2: Convert to fraction form
    78,319.07/117,478.60 = 19,154.03/x
  3. Step 3: Cross multiply
    78,319.07x = 117,478.60 × 19,154.03
  4. Step 4: Simplify right side
    78,319.07x = 2,250,188,874.57
  5. Step 5: Solve for x
    x = 2,250,188,874.57/78,319.07
  6. Step 6: Final answer
    x = 28,731.05

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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.