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Finding the Fourth Proportional to 32,873.72, 45,270.18 and 28,565

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Solution

The fourth proportional to 32,873.72, 45,270.18 and 28,565 is: 39,336.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,873.72 : 45,270.18 = 28,565 : x
  2. Step 2: Convert to fraction form
    32,873.72/45,270.18 = 28,565/x
  3. Step 3: Cross multiply
    32,873.72x = 45,270.18 × 28,565
  4. Step 4: Simplify right side
    32,873.72x = 1,293,142,691.70
  5. Step 5: Solve for x
    x = 1,293,142,691.70/32,873.72
  6. Step 6: Final answer
    x = 39,336.67

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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.