Home / 90,049.36-135,079.80-34,645.36

Finding the Fourth Proportional to 90,049.36, 135,079.80 and 34,645.36

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Solution

The fourth proportional to 90,049.36, 135,079.80 and 34,645.36 is: 51,970.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,049.36 : 135,079.80 = 34,645.36 : x
  2. Step 2: Convert to fraction form
    90,049.36/135,079.80 = 34,645.36/x
  3. Step 3: Cross multiply
    90,049.36x = 135,079.80 × 34,645.36
  4. Step 4: Simplify right side
    90,049.36x = 4,679,888,299.73
  5. Step 5: Solve for x
    x = 4,679,888,299.73/90,049.36
  6. Step 6: Final answer
    x = 51,970.26

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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.