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Finding the Fourth Proportional to 47,019.68, 70,529.80 and 11,959.38

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Solution

The fourth proportional to 47,019.68, 70,529.80 and 11,959.38 is: 17,939.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,019.68 : 70,529.80 = 11,959.38 : x
  2. Step 2: Convert to fraction form
    47,019.68/70,529.80 = 11,959.38/x
  3. Step 3: Cross multiply
    47,019.68x = 70,529.80 × 11,959.38
  4. Step 4: Simplify right side
    47,019.68x = 843,492,679.52
  5. Step 5: Solve for x
    x = 843,492,679.52/47,019.68
  6. Step 6: Final answer
    x = 17,939.14

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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.