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Finding the Fourth Proportional to 44,321, 61,128.39 and 28,406.96

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Solution

The fourth proportional to 44,321, 61,128.39 and 28,406.96 is: 39,179.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,321 : 61,128.39 = 28,406.96 : x
  2. Step 2: Convert to fraction form
    44,321/61,128.39 = 28,406.96/x
  3. Step 3: Cross multiply
    44,321x = 61,128.39 × 28,406.96
  4. Step 4: Simplify right side
    44,321x = 1,736,471,729.59
  5. Step 5: Solve for x
    x = 1,736,471,729.59/44,321
  6. Step 6: Final answer
    x = 39,179.43

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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.