Home / 90,003.20-135,089.55-45,661.77

Finding the Fourth Proportional to 90,003.20, 135,089.55 and 45,661.77

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Solution

The fourth proportional to 90,003.20, 135,089.55 and 45,661.77 is: 68,535.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,003.20 : 135,089.55 = 45,661.77 : x
  2. Step 2: Convert to fraction form
    90,003.20/135,089.55 = 45,661.77/x
  3. Step 3: Cross multiply
    90,003.20x = 135,089.55 × 45,661.77
  4. Step 4: Simplify right side
    90,003.20x = 6,168,427,961.50
  5. Step 5: Solve for x
    x = 6,168,427,961.50/90,003.20
  6. Step 6: Final answer
    x = 68,535.66

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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.