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Finding the Fourth Proportional to 79,897.79, 110,212.45 and 51,207.26

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Solution

The fourth proportional to 79,897.79, 110,212.45 and 51,207.26 is: 70,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,897.79 : 110,212.45 = 51,207.26 : x
  2. Step 2: Convert to fraction form
    79,897.79/110,212.45 = 51,207.26/x
  3. Step 3: Cross multiply
    79,897.79x = 110,212.45 × 51,207.26
  4. Step 4: Simplify right side
    79,897.79x = 5,643,676,903.31
  5. Step 5: Solve for x
    x = 5,643,676,903.31/79,897.79
  6. Step 6: Final answer
    x = 70,636.21

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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.