Home / 47,615.15-71,436.70-21,314.05

Finding the Fourth Proportional to 47,615.15, 71,436.70 and 21,314.05

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Solution

The fourth proportional to 47,615.15, 71,436.70 and 21,314.05 is: 31,977.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,615.15 : 71,436.70 = 21,314.05 : x
  2. Step 2: Convert to fraction form
    47,615.15/71,436.70 = 21,314.05/x
  3. Step 3: Cross multiply
    47,615.15x = 71,436.70 × 21,314.05
  4. Step 4: Simplify right side
    47,615.15x = 1,522,605,243.69
  5. Step 5: Solve for x
    x = 1,522,605,243.69/47,615.15
  6. Step 6: Final answer
    x = 31,977.33

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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.