Home / 90,232.87-135,273.18-56,879.40

Finding the Fourth Proportional to 90,232.87, 135,273.18 and 56,879.40

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Solution

The fourth proportional to 90,232.87, 135,273.18 and 56,879.40 is: 85,271.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,232.87 : 135,273.18 = 56,879.40 : x
  2. Step 2: Convert to fraction form
    90,232.87/135,273.18 = 56,879.40/x
  3. Step 3: Cross multiply
    90,232.87x = 135,273.18 × 56,879.40
  4. Step 4: Simplify right side
    90,232.87x = 7,694,257,314.49
  5. Step 5: Solve for x
    x = 7,694,257,314.49/90,232.87
  6. Step 6: Final answer
    x = 85,271.11

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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.