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Finding the Fourth Proportional to 47,019.65, 70,529.15 and 11,958.99

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Solution

The fourth proportional to 47,019.65, 70,529.15 and 11,958.99 is: 17,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,019.65 : 70,529.15 = 11,958.99 : x
  2. Step 2: Convert to fraction form
    47,019.65/70,529.15 = 11,958.99/x
  3. Step 3: Cross multiply
    47,019.65x = 70,529.15 × 11,958.99
  4. Step 4: Simplify right side
    47,019.65x = 843,457,339.76
  5. Step 5: Solve for x
    x = 843,457,339.76/47,019.65
  6. Step 6: Final answer
    x = 17,938.40

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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.