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Finding the Fourth Proportional to 53,258.40, 79,358.40 and 51,249.60

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Solution

The fourth proportional to 53,258.40, 79,358.40 and 51,249.60 is: 76,365.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,258.40 : 79,358.40 = 51,249.60 : x
  2. Step 2: Convert to fraction form
    53,258.40/79,358.40 = 51,249.60/x
  3. Step 3: Cross multiply
    53,258.40x = 79,358.40 × 51,249.60
  4. Step 4: Simplify right side
    53,258.40x = 4,067,086,256.64
  5. Step 5: Solve for x
    x = 4,067,086,256.64/53,258.40
  6. Step 6: Final answer
    x = 76,365.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.