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Finding the Fourth Proportional to 79,609.76, 109,877.18 and 45,641.06

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Solution

The fourth proportional to 79,609.76, 109,877.18 and 45,641.06 is: 62,993.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,609.76 : 109,877.18 = 45,641.06 : x
  2. Step 2: Convert to fraction form
    79,609.76/109,877.18 = 45,641.06/x
  3. Step 3: Cross multiply
    79,609.76x = 109,877.18 × 45,641.06
  4. Step 4: Simplify right side
    79,609.76x = 5,014,910,965.01
  5. Step 5: Solve for x
    x = 5,014,910,965.01/79,609.76
  6. Step 6: Final answer
    x = 62,993.67

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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.