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Finding the Fourth Proportional to 78,717.96, 118,046.28 and 26,113.32

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Solution

The fourth proportional to 78,717.96, 118,046.28 and 26,113.32 is: 39,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,717.96 : 118,046.28 = 26,113.32 : x
  2. Step 2: Convert to fraction form
    78,717.96/118,046.28 = 26,113.32/x
  3. Step 3: Cross multiply
    78,717.96x = 118,046.28 × 26,113.32
  4. Step 4: Simplify right side
    78,717.96x = 3,082,580,284.45
  5. Step 5: Solve for x
    x = 3,082,580,284.45/78,717.96
  6. Step 6: Final answer
    x = 39,159.81

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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.