Home / 90,661.57-135,992.33-28,332.07

Finding the Fourth Proportional to 90,661.57, 135,992.33 and 28,332.07

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Solution

The fourth proportional to 90,661.57, 135,992.33 and 28,332.07 is: 42,498.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,661.57 : 135,992.33 = 28,332.07 : x
  2. Step 2: Convert to fraction form
    90,661.57/135,992.33 = 28,332.07/x
  3. Step 3: Cross multiply
    90,661.57x = 135,992.33 × 28,332.07
  4. Step 4: Simplify right side
    90,661.57x = 3,852,944,213.02
  5. Step 5: Solve for x
    x = 3,852,944,213.02/90,661.57
  6. Step 6: Final answer
    x = 42,498.10

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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.