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Finding the Fourth Proportional to 47,295.70, 65,245.80 and 28,164.58

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Solution

The fourth proportional to 47,295.70, 65,245.80 and 28,164.58 is: 38,853.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,295.70 : 65,245.80 = 28,164.58 : x
  2. Step 2: Convert to fraction form
    47,295.70/65,245.80 = 28,164.58/x
  3. Step 3: Cross multiply
    47,295.70x = 65,245.80 × 28,164.58
  4. Step 4: Simplify right side
    47,295.70x = 1,837,620,553.76
  5. Step 5: Solve for x
    x = 1,837,620,553.76/47,295.70
  6. Step 6: Final answer
    x = 38,853.86

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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.