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Finding the Fourth Proportional to 47,073.68, 70,609.60 and 18,993.16

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Solution

The fourth proportional to 47,073.68, 70,609.60 and 18,993.16 is: 28,489.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,073.68 : 70,609.60 = 18,993.16 : x
  2. Step 2: Convert to fraction form
    47,073.68/70,609.60 = 18,993.16/x
  3. Step 3: Cross multiply
    47,073.68x = 70,609.60 × 18,993.16
  4. Step 4: Simplify right side
    47,073.68x = 1,341,099,430.34
  5. Step 5: Solve for x
    x = 1,341,099,430.34/47,073.68
  6. Step 6: Final answer
    x = 28,489.37

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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.