Home / 78,168.32-117,223.74-26,862.43

Finding the Fourth Proportional to 78,168.32, 117,223.74 and 26,862.43

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Solution

The fourth proportional to 78,168.32, 117,223.74 and 26,862.43 is: 40,283.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,168.32 : 117,223.74 = 26,862.43 : x
  2. Step 2: Convert to fraction form
    78,168.32/117,223.74 = 26,862.43/x
  3. Step 3: Cross multiply
    78,168.32x = 117,223.74 × 26,862.43
  4. Step 4: Simplify right side
    78,168.32x = 3,148,913,923.97
  5. Step 5: Solve for x
    x = 3,148,913,923.97/78,168.32
  6. Step 6: Final answer
    x = 40,283.76

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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.