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Finding the Fourth Proportional to 47,149.56, 70,719.06 and 12,090.04

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Solution

The fourth proportional to 47,149.56, 70,719.06 and 12,090.04 is: 18,133.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,149.56 : 70,719.06 = 12,090.04 : x
  2. Step 2: Convert to fraction form
    47,149.56/70,719.06 = 12,090.04/x
  3. Step 3: Cross multiply
    47,149.56x = 70,719.06 × 12,090.04
  4. Step 4: Simplify right side
    47,149.56x = 854,996,264.16
  5. Step 5: Solve for x
    x = 854,996,264.16/47,149.56
  6. Step 6: Final answer
    x = 18,133.71

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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.