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Finding the Fourth Proportional to 79,143, 118,714.50 and 23,739

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Solution

The fourth proportional to 79,143, 118,714.50 and 23,739 is: 35,608.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,143 : 118,714.50 = 23,739 : x
  2. Step 2: Convert to fraction form
    79,143/118,714.50 = 23,739/x
  3. Step 3: Cross multiply
    79,143x = 118,714.50 × 23,739
  4. Step 4: Simplify right side
    79,143x = 2,818,163,515.50
  5. Step 5: Solve for x
    x = 2,818,163,515.50/79,143
  6. Step 6: Final answer
    x = 35,608.50

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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.