Home / 78,375.45-117,490.28-54,682.95

Finding the Fourth Proportional to 78,375.45, 117,490.28 and 54,682.95

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Solution

The fourth proportional to 78,375.45, 117,490.28 and 54,682.95 is: 81,973.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,375.45 : 117,490.28 = 54,682.95 : x
  2. Step 2: Convert to fraction form
    78,375.45/117,490.28 = 54,682.95/x
  3. Step 3: Cross multiply
    78,375.45x = 117,490.28 × 54,682.95
  4. Step 4: Simplify right side
    78,375.45x = 6,424,714,833.31
  5. Step 5: Solve for x
    x = 6,424,714,833.31/78,375.45
  6. Step 6: Final answer
    x = 81,973.56

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1.5x scale

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.