Home / 78,199.89-117,275.06-28,273.38

Finding the Fourth Proportional to 78,199.89, 117,275.06 and 28,273.38

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Solution

The fourth proportional to 78,199.89, 117,275.06 and 28,273.38 is: 42,401.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,199.89 : 117,275.06 = 28,273.38 : x
  2. Step 2: Convert to fraction form
    78,199.89/117,275.06 = 28,273.38/x
  3. Step 3: Cross multiply
    78,199.89x = 117,275.06 × 28,273.38
  4. Step 4: Simplify right side
    78,199.89x = 3,315,762,406.59
  5. Step 5: Solve for x
    x = 3,315,762,406.59/78,199.89
  6. Step 6: Final answer
    x = 42,401.11

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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.