Home / 90,890.10-136,271.90-40,261.64

Finding the Fourth Proportional to 90,890.10, 136,271.90 and 40,261.64

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Solution

The fourth proportional to 90,890.10, 136,271.90 and 40,261.64 is: 60,364.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,890.10 : 136,271.90 = 40,261.64 : x
  2. Step 2: Convert to fraction form
    90,890.10/136,271.90 = 40,261.64/x
  3. Step 3: Cross multiply
    90,890.10x = 136,271.90 × 40,261.64
  4. Step 4: Simplify right side
    90,890.10x = 5,486,529,297.25
  5. Step 5: Solve for x
    x = 5,486,529,297.25/90,890.10
  6. Step 6: Final answer
    x = 60,364.43

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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.