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Finding the Fourth Proportional to 79,850.48, 110,138.40 and 64,743.77

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Solution

The fourth proportional to 79,850.48, 110,138.40 and 64,743.77 is: 89,301.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,850.48 : 110,138.40 = 64,743.77 : x
  2. Step 2: Convert to fraction form
    79,850.48/110,138.40 = 64,743.77/x
  3. Step 3: Cross multiply
    79,850.48x = 110,138.40 × 64,743.77
  4. Step 4: Simplify right side
    79,850.48x = 7,130,775,513.11
  5. Step 5: Solve for x
    x = 7,130,775,513.11/79,850.48
  6. Step 6: Final answer
    x = 89,301.60

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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.