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Finding the Fourth Proportional to 47,170.98, 70,388.64 and 42,979.14

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Solution

The fourth proportional to 47,170.98, 70,388.64 and 42,979.14 is: 64,133.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,170.98 : 70,388.64 = 42,979.14 : x
  2. Step 2: Convert to fraction form
    47,170.98/70,388.64 = 42,979.14/x
  3. Step 3: Cross multiply
    47,170.98x = 70,388.64 × 42,979.14
  4. Step 4: Simplify right side
    47,170.98x = 3,025,243,212.97
  5. Step 5: Solve for x
    x = 3,025,243,212.97/47,170.98
  6. Step 6: Final answer
    x = 64,133.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.