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Finding the Fourth Proportional to 78,903.54, 118,355.66 and 19,739.04

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Solution

The fourth proportional to 78,903.54, 118,355.66 and 19,739.04 is: 29,608.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,903.54 : 118,355.66 = 19,739.04 : x
  2. Step 2: Convert to fraction form
    78,903.54/118,355.66 = 19,739.04/x
  3. Step 3: Cross multiply
    78,903.54x = 118,355.66 × 19,739.04
  4. Step 4: Simplify right side
    78,903.54x = 2,336,227,248.69
  5. Step 5: Solve for x
    x = 2,336,227,248.69/78,903.54
  6. Step 6: Final answer
    x = 29,608.65

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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.