Home / 90,644.57-135,920.16-40,681.83

Finding the Fourth Proportional to 90,644.57, 135,920.16 and 40,681.83

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Solution

The fourth proportional to 90,644.57, 135,920.16 and 40,681.83 is: 61,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,644.57 : 135,920.16 = 40,681.83 : x
  2. Step 2: Convert to fraction form
    90,644.57/135,920.16 = 40,681.83/x
  3. Step 3: Cross multiply
    90,644.57x = 135,920.16 × 40,681.83
  4. Step 4: Simplify right side
    90,644.57x = 5,529,480,842.69
  5. Step 5: Solve for x
    x = 5,529,480,842.69/90,644.57
  6. Step 6: Final answer
    x = 61,001.79

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1.5x scale

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.