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Finding the Fourth Proportional to 84,560.68, 126,815.71 and 53,018.67

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Solution

The fourth proportional to 84,560.68, 126,815.71 and 53,018.67 is: 79,512.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,560.68 : 126,815.71 = 53,018.67 : x
  2. Step 2: Convert to fraction form
    84,560.68/126,815.71 = 53,018.67/x
  3. Step 3: Cross multiply
    84,560.68x = 126,815.71 × 53,018.67
  4. Step 4: Simplify right side
    84,560.68x = 6,723,600,279.31
  5. Step 5: Solve for x
    x = 6,723,600,279.31/84,560.68
  6. Step 6: Final answer
    x = 79,512.14

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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.