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Finding the Fourth Proportional to 46,613.40, 69,944.40 and 20,320.80

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Solution

The fourth proportional to 46,613.40, 69,944.40 and 20,320.80 is: 30,491.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,613.40 : 69,944.40 = 20,320.80 : x
  2. Step 2: Convert to fraction form
    46,613.40/69,944.40 = 20,320.80/x
  3. Step 3: Cross multiply
    46,613.40x = 69,944.40 × 20,320.80
  4. Step 4: Simplify right side
    46,613.40x = 1,421,326,163.52
  5. Step 5: Solve for x
    x = 1,421,326,163.52/46,613.40
  6. Step 6: Final answer
    x = 30,491.79

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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.