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Finding the Fourth Proportional to 53,286.60, 79,973.10 and 51,558.60

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Solution

The fourth proportional to 53,286.60, 79,973.10 and 51,558.60 is: 77,379.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,286.60 : 79,973.10 = 51,558.60 : x
  2. Step 2: Convert to fraction form
    53,286.60/79,973.10 = 51,558.60/x
  3. Step 3: Cross multiply
    53,286.60x = 79,973.10 × 51,558.60
  4. Step 4: Simplify right side
    53,286.60x = 4,123,301,073.66
  5. Step 5: Solve for x
    x = 4,123,301,073.66/53,286.60
  6. Step 6: Final answer
    x = 77,379.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.