Home / 90,457.32-135,488.70-55,290.36

Finding the Fourth Proportional to 90,457.32, 135,488.70 and 55,290.36

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Solution

The fourth proportional to 90,457.32, 135,488.70 and 55,290.36 is: 82,814.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,457.32 : 135,488.70 = 55,290.36 : x
  2. Step 2: Convert to fraction form
    90,457.32/135,488.70 = 55,290.36/x
  3. Step 3: Cross multiply
    90,457.32x = 135,488.70 × 55,290.36
  4. Step 4: Simplify right side
    90,457.32x = 7,491,218,998.93
  5. Step 5: Solve for x
    x = 7,491,218,998.93/90,457.32
  6. Step 6: Final answer
    x = 82,814.96

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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.