Home / 90,856.41-125,380.03-56,883.64

Finding the Fourth Proportional to 90,856.41, 125,380.03 and 56,883.64

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Solution

The fourth proportional to 90,856.41, 125,380.03 and 56,883.64 is: 78,498.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,856.41 : 125,380.03 = 56,883.64 : x
  2. Step 2: Convert to fraction form
    90,856.41/125,380.03 = 56,883.64/x
  3. Step 3: Cross multiply
    90,856.41x = 125,380.03 × 56,883.64
  4. Step 4: Simplify right side
    90,856.41x = 7,132,072,568.44
  5. Step 5: Solve for x
    x = 7,132,072,568.44/90,856.41
  6. Step 6: Final answer
    x = 78,498.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.