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Finding the Fourth Proportional to 79,019.76, 118,446.40 and 54,053.04

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Solution

The fourth proportional to 79,019.76, 118,446.40 and 54,053.04 is: 81,022.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,019.76 : 118,446.40 = 54,053.04 : x
  2. Step 2: Convert to fraction form
    79,019.76/118,446.40 = 54,053.04/x
  3. Step 3: Cross multiply
    79,019.76x = 118,446.40 × 54,053.04
  4. Step 4: Simplify right side
    79,019.76x = 6,402,387,997.06
  5. Step 5: Solve for x
    x = 6,402,387,997.06/79,019.76
  6. Step 6: Final answer
    x = 81,022.62

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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.