Home / 90,219.57-135,223.23-36,878.64

Finding the Fourth Proportional to 90,219.57, 135,223.23 and 36,878.64

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Solution

The fourth proportional to 90,219.57, 135,223.23 and 36,878.64 is: 55,274.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,219.57 : 135,223.23 = 36,878.64 : x
  2. Step 2: Convert to fraction form
    90,219.57/135,223.23 = 36,878.64/x
  3. Step 3: Cross multiply
    90,219.57x = 135,223.23 × 36,878.64
  4. Step 4: Simplify right side
    90,219.57x = 4,986,848,818.81
  5. Step 5: Solve for x
    x = 4,986,848,818.81/90,219.57
  6. Step 6: Final answer
    x = 55,274.58

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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.