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Finding the Fourth Proportional to 104,293.88, 156,445.68 and 30,421.88

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Solution

The fourth proportional to 104,293.88, 156,445.68 and 30,421.88 is: 45,634.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,293.88 : 156,445.68 = 30,421.88 : x
  2. Step 2: Convert to fraction form
    104,293.88/156,445.68 = 30,421.88/x
  3. Step 3: Cross multiply
    104,293.88x = 156,445.68 × 30,421.88
  4. Step 4: Simplify right side
    104,293.88x = 4,759,370,921.25
  5. Step 5: Solve for x
    x = 4,759,370,921.25/104,293.88
  6. Step 6: Final answer
    x = 45,634.23

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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.