Home / 90,031.13-135,083.04-40,077.09

Finding the Fourth Proportional to 90,031.13, 135,083.04 and 40,077.09

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Solution

The fourth proportional to 90,031.13, 135,083.04 and 40,077.09 is: 60,131.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,031.13 : 135,083.04 = 40,077.09 : x
  2. Step 2: Convert to fraction form
    90,031.13/135,083.04 = 40,077.09/x
  3. Step 3: Cross multiply
    90,031.13x = 135,083.04 × 40,077.09
  4. Step 4: Simplify right side
    90,031.13x = 5,413,735,151.55
  5. Step 5: Solve for x
    x = 5,413,735,151.55/90,031.13
  6. Step 6: Final answer
    x = 60,131.81

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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.