Home / 90,538.39-124,984.81-54,257.07

Finding the Fourth Proportional to 90,538.39, 124,984.81 and 54,257.07

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Solution

The fourth proportional to 90,538.39, 124,984.81 and 54,257.07 is: 74,899.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,538.39 : 124,984.81 = 54,257.07 : x
  2. Step 2: Convert to fraction form
    90,538.39/124,984.81 = 54,257.07/x
  3. Step 3: Cross multiply
    90,538.39x = 124,984.81 × 54,257.07
  4. Step 4: Simplify right side
    90,538.39x = 6,781,309,313.82
  5. Step 5: Solve for x
    x = 6,781,309,313.82/90,538.39
  6. Step 6: Final answer
    x = 74,899.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.