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Finding the Fourth Proportional to 47,654.64, 65,765.04 and 28,788.12

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Solution

The fourth proportional to 47,654.64, 65,765.04 and 28,788.12 is: 39,728.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,654.64 : 65,765.04 = 28,788.12 : x
  2. Step 2: Convert to fraction form
    47,654.64/65,765.04 = 28,788.12/x
  3. Step 3: Cross multiply
    47,654.64x = 65,765.04 × 28,788.12
  4. Step 4: Simplify right side
    47,654.64x = 1,893,251,863.32
  5. Step 5: Solve for x
    x = 1,893,251,863.32/47,654.64
  6. Step 6: Final answer
    x = 39,728.59

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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.