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Finding the Fourth Proportional to 78,951.62, 118,429.59 and 26,359.22

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Solution

The fourth proportional to 78,951.62, 118,429.59 and 26,359.22 is: 39,539.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,951.62 : 118,429.59 = 26,359.22 : x
  2. Step 2: Convert to fraction form
    78,951.62/118,429.59 = 26,359.22/x
  3. Step 3: Cross multiply
    78,951.62x = 118,429.59 × 26,359.22
  4. Step 4: Simplify right side
    78,951.62x = 3,121,712,012.24
  5. Step 5: Solve for x
    x = 3,121,712,012.24/78,951.62
  6. Step 6: Final answer
    x = 39,539.55

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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.