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Finding the Fourth Proportional to 79,101.54, 109,138.51 and 45,097.62

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Solution

The fourth proportional to 79,101.54, 109,138.51 and 45,097.62 is: 62,222.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,101.54 : 109,138.51 = 45,097.62 : x
  2. Step 2: Convert to fraction form
    79,101.54/109,138.51 = 45,097.62/x
  3. Step 3: Cross multiply
    79,101.54x = 109,138.51 × 45,097.62
  4. Step 4: Simplify right side
    79,101.54x = 4,921,887,516.99
  5. Step 5: Solve for x
    x = 4,921,887,516.99/79,101.54
  6. Step 6: Final answer
    x = 62,222.40

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1.5x scale

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.