Home / 78,027.63-117,041.49-18,863.31

Finding the Fourth Proportional to 78,027.63, 117,041.49 and 18,863.31

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Solution

The fourth proportional to 78,027.63, 117,041.49 and 18,863.31 is: 28,294.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,027.63 : 117,041.49 = 18,863.31 : x
  2. Step 2: Convert to fraction form
    78,027.63/117,041.49 = 18,863.31/x
  3. Step 3: Cross multiply
    78,027.63x = 117,041.49 × 18,863.31
  4. Step 4: Simplify right side
    78,027.63x = 2,207,789,908.73
  5. Step 5: Solve for x
    x = 2,207,789,908.73/78,027.63
  6. Step 6: Final answer
    x = 28,294.98

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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.