Home / 90,034.61-135,136.67-45,693.18

Finding the Fourth Proportional to 90,034.61, 135,136.67 and 45,693.18

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Solution

The fourth proportional to 90,034.61, 135,136.67 and 45,693.18 is: 68,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,034.61 : 135,136.67 = 45,693.18 : x
  2. Step 2: Convert to fraction form
    90,034.61/135,136.67 = 45,693.18/x
  3. Step 3: Cross multiply
    90,034.61x = 135,136.67 × 45,693.18
  4. Step 4: Simplify right side
    90,034.61x = 6,174,823,958.44
  5. Step 5: Solve for x
    x = 6,174,823,958.44/90,034.61
  6. Step 6: Final answer
    x = 68,582.79

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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.