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Finding the Fourth Proportional to 70,686.82, 106,027.80 and 18,096.76

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Solution

The fourth proportional to 70,686.82, 106,027.80 and 18,096.76 is: 27,144.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,686.82 : 106,027.80 = 18,096.76 : x
  2. Step 2: Convert to fraction form
    70,686.82/106,027.80 = 18,096.76/x
  3. Step 3: Cross multiply
    70,686.82x = 106,027.80 × 18,096.76
  4. Step 4: Simplify right side
    70,686.82x = 1,918,759,649.93
  5. Step 5: Solve for x
    x = 1,918,759,649.93/70,686.82
  6. Step 6: Final answer
    x = 27,144.52

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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.