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Finding the Fourth Proportional to 32,878.28, 45,258 and 28,679.24

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Solution

The fourth proportional to 32,878.28, 45,258 and 28,679.24 is: 39,477.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,878.28 : 45,258 = 28,679.24 : x
  2. Step 2: Convert to fraction form
    32,878.28/45,258 = 28,679.24/x
  3. Step 3: Cross multiply
    32,878.28x = 45,258 × 28,679.24
  4. Step 4: Simplify right side
    32,878.28x = 1,297,965,043.92
  5. Step 5: Solve for x
    x = 1,297,965,043.92/32,878.28
  6. Step 6: Final answer
    x = 39,477.89

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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.