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Finding the Fourth Proportional to 52,648.70, 79,009.94 and 30,431.50

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Solution

The fourth proportional to 52,648.70, 79,009.94 and 30,431.50 is: 45,668.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,648.70 : 79,009.94 = 30,431.50 : x
  2. Step 2: Convert to fraction form
    52,648.70/79,009.94 = 30,431.50/x
  3. Step 3: Cross multiply
    52,648.70x = 79,009.94 × 30,431.50
  4. Step 4: Simplify right side
    52,648.70x = 2,404,390,867.66
  5. Step 5: Solve for x
    x = 2,404,390,867.66/52,648.70
  6. Step 6: Final answer
    x = 45,668.57

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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.