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Finding the Fourth Proportional to 78,859.52, 118,308.68 and 23,455.52

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Solution

The fourth proportional to 78,859.52, 118,308.68 and 23,455.52 is: 35,189.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859.52 : 118,308.68 = 23,455.52 : x
  2. Step 2: Convert to fraction form
    78,859.52/118,308.68 = 23,455.52/x
  3. Step 3: Cross multiply
    78,859.52x = 118,308.68 × 23,455.52
  4. Step 4: Simplify right side
    78,859.52x = 2,774,991,609.91
  5. Step 5: Solve for x
    x = 2,774,991,609.91/78,859.52
  6. Step 6: Final answer
    x = 35,189.05

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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.