Home / 90,074.11-135,065.26-30,081.00

Finding the Fourth Proportional to 90,074.11, 135,065.26 and 30,081.00

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Solution

The fourth proportional to 90,074.11, 135,065.26 and 30,081.00 is: 45,106.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,074.11 : 135,065.26 = 30,081.00 : x
  2. Step 2: Convert to fraction form
    90,074.11/135,065.26 = 30,081.00/x
  3. Step 3: Cross multiply
    90,074.11x = 135,065.26 × 30,081.00
  4. Step 4: Simplify right side
    90,074.11x = 4,062,898,460.95
  5. Step 5: Solve for x
    x = 4,062,898,460.95/90,074.11
  6. Step 6: Final answer
    x = 45,106.17

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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.