Home / 90,661.36-135,987.88-31,501.66

Finding the Fourth Proportional to 90,661.36, 135,987.88 and 31,501.66

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Solution

The fourth proportional to 90,661.36, 135,987.88 and 31,501.66 is: 47,251.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,661.36 : 135,987.88 = 31,501.66 : x
  2. Step 2: Convert to fraction form
    90,661.36/135,987.88 = 31,501.66/x
  3. Step 3: Cross multiply
    90,661.36x = 135,987.88 × 31,501.66
  4. Step 4: Simplify right side
    90,661.36x = 4,283,843,959.88
  5. Step 5: Solve for x
    x = 4,283,843,959.88/90,661.36
  6. Step 6: Final answer
    x = 47,251.04

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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.