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Finding the Fourth Proportional to 78,951.30, 118,388.52 and 26,343

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Solution

The fourth proportional to 78,951.30, 118,388.52 and 26,343 is: 39,501.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,951.30 : 118,388.52 = 26,343 : x
  2. Step 2: Convert to fraction form
    78,951.30/118,388.52 = 26,343/x
  3. Step 3: Cross multiply
    78,951.30x = 118,388.52 × 26,343
  4. Step 4: Simplify right side
    78,951.30x = 3,118,708,782.36
  5. Step 5: Solve for x
    x = 3,118,708,782.36/78,951.30
  6. Step 6: Final answer
    x = 39,501.68

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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.