Home / 90,280.62-135,415.53-31,114.98

Finding the Fourth Proportional to 90,280.62, 135,415.53 and 31,114.98

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Solution

The fourth proportional to 90,280.62, 135,415.53 and 31,114.98 is: 46,670.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,280.62 : 135,415.53 = 31,114.98 : x
  2. Step 2: Convert to fraction form
    90,280.62/135,415.53 = 31,114.98/x
  3. Step 3: Cross multiply
    90,280.62x = 135,415.53 × 31,114.98
  4. Step 4: Simplify right side
    90,280.62x = 4,213,451,507.64
  5. Step 5: Solve for x
    x = 4,213,451,507.64/90,280.62
  6. Step 6: Final answer
    x = 46,670.61

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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.