Home / 90,331.16-135,580.78-45,991.08

Finding the Fourth Proportional to 90,331.16, 135,580.78 and 45,991.08

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Solution

The fourth proportional to 90,331.16, 135,580.78 and 45,991.08 is: 69,029.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,331.16 : 135,580.78 = 45,991.08 : x
  2. Step 2: Convert to fraction form
    90,331.16/135,580.78 = 45,991.08/x
  3. Step 3: Cross multiply
    90,331.16x = 135,580.78 × 45,991.08
  4. Step 4: Simplify right side
    90,331.16x = 6,235,506,499.44
  5. Step 5: Solve for x
    x = 6,235,506,499.44/90,331.16
  6. Step 6: Final answer
    x = 69,029.41

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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.