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Finding the Fourth Proportional to 94,138.31, 129,911.78 and 51,697.76

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Solution

The fourth proportional to 94,138.31, 129,911.78 and 51,697.76 is: 71,343.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,138.31 : 129,911.78 = 51,697.76 : x
  2. Step 2: Convert to fraction form
    94,138.31/129,911.78 = 51,697.76/x
  3. Step 3: Cross multiply
    94,138.31x = 129,911.78 × 51,697.76
  4. Step 4: Simplify right side
    94,138.31x = 6,716,147,503.30
  5. Step 5: Solve for x
    x = 6,716,147,503.30/94,138.31
  6. Step 6: Final answer
    x = 71,343.40

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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.