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Finding the Fourth Proportional to 69,980.52, 104,960.92 and 20,064.88

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Solution

The fourth proportional to 69,980.52, 104,960.92 and 20,064.88 is: 30,094.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,980.52 : 104,960.92 = 20,064.88 : x
  2. Step 2: Convert to fraction form
    69,980.52/104,960.92 = 20,064.88/x
  3. Step 3: Cross multiply
    69,980.52x = 104,960.92 × 20,064.88
  4. Step 4: Simplify right side
    69,980.52x = 2,106,028,264.49
  5. Step 5: Solve for x
    x = 2,106,028,264.49/69,980.52
  6. Step 6: Final answer
    x = 30,094.49

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1.5x scale

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.