Home / 90,613.20-135,952.20-38,038.80

Finding the Fourth Proportional to 90,613.20, 135,952.20 and 38,038.80

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Solution

The fourth proportional to 90,613.20, 135,952.20 and 38,038.80 is: 57,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,613.20 : 135,952.20 = 38,038.80 : x
  2. Step 2: Convert to fraction form
    90,613.20/135,952.20 = 38,038.80/x
  3. Step 3: Cross multiply
    90,613.20x = 135,952.20 × 38,038.80
  4. Step 4: Simplify right side
    90,613.20x = 5,171,458,545.36
  5. Step 5: Solve for x
    x = 5,171,458,545.36/90,613.20
  6. Step 6: Final answer
    x = 57,071.80

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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.