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Finding the Fourth Proportional to 70,949.39, 98,332.79 and 69,620.78

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Solution

The fourth proportional to 70,949.39, 98,332.79 and 69,620.78 is: 96,491.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,949.39 : 98,332.79 = 69,620.78 : x
  2. Step 2: Convert to fraction form
    70,949.39/98,332.79 = 69,620.78/x
  3. Step 3: Cross multiply
    70,949.39x = 98,332.79 × 69,620.78
  4. Step 4: Simplify right side
    70,949.39x = 6,846,005,437.10
  5. Step 5: Solve for x
    x = 6,846,005,437.10/70,949.39
  6. Step 6: Final answer
    x = 96,491.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.