Home / 90,003.40-135,053.70-40,091.20

Finding the Fourth Proportional to 90,003.40, 135,053.70 and 40,091.20

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Solution

The fourth proportional to 90,003.40, 135,053.70 and 40,091.20 is: 60,158.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,003.40 : 135,053.70 = 40,091.20 : x
  2. Step 2: Convert to fraction form
    90,003.40/135,053.70 = 40,091.20/x
  3. Step 3: Cross multiply
    90,003.40x = 135,053.70 × 40,091.20
  4. Step 4: Simplify right side
    90,003.40x = 5,414,464,897.44
  5. Step 5: Solve for x
    x = 5,414,464,897.44/90,003.40
  6. Step 6: Final answer
    x = 60,158.45

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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.