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Finding the Fourth Proportional to 79,913.84, 110,254.76 and 51,636.16

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Solution

The fourth proportional to 79,913.84, 110,254.76 and 51,636.16 is: 71,240.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,913.84 : 110,254.76 = 51,636.16 : x
  2. Step 2: Convert to fraction form
    79,913.84/110,254.76 = 51,636.16/x
  3. Step 3: Cross multiply
    79,913.84x = 110,254.76 × 51,636.16
  4. Step 4: Simplify right side
    79,913.84x = 5,693,132,428.12
  5. Step 5: Solve for x
    x = 5,693,132,428.12/79,913.84
  6. Step 6: Final answer
    x = 71,240.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.