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Finding the Fourth Proportional to 68,999.92, 103,467.12 and 31,548.88

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Solution

The fourth proportional to 68,999.92, 103,467.12 and 31,548.88 is: 47,308.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,999.92 : 103,467.12 = 31,548.88 : x
  2. Step 2: Convert to fraction form
    68,999.92/103,467.12 = 31,548.88/x
  3. Step 3: Cross multiply
    68,999.92x = 103,467.12 × 31,548.88
  4. Step 4: Simplify right side
    68,999.92x = 3,264,271,752.83
  5. Step 5: Solve for x
    x = 3,264,271,752.83/68,999.92
  6. Step 6: Final answer
    x = 47,308.34

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1.5x scale

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.