Home / 90,887.11-136,352.77-30,919.57

Finding the Fourth Proportional to 90,887.11, 136,352.77 and 30,919.57

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Solution

The fourth proportional to 90,887.11, 136,352.77 and 30,919.57 is: 46,386.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,887.11 : 136,352.77 = 30,919.57 : x
  2. Step 2: Convert to fraction form
    90,887.11/136,352.77 = 30,919.57/x
  3. Step 3: Cross multiply
    90,887.11x = 136,352.77 × 30,919.57
  4. Step 4: Simplify right side
    90,887.11x = 4,215,969,365.51
  5. Step 5: Solve for x
    x = 4,215,969,365.51/90,887.11
  6. Step 6: Final answer
    x = 46,386.88

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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.