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Finding the Fourth Proportional to 79,734.64, 110,145.72 and 75,535.60

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Solution

The fourth proportional to 79,734.64, 110,145.72 and 75,535.60 is: 104,345.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,734.64 : 110,145.72 = 75,535.60 : x
  2. Step 2: Convert to fraction form
    79,734.64/110,145.72 = 75,535.60/x
  3. Step 3: Cross multiply
    79,734.64x = 110,145.72 × 75,535.60
  4. Step 4: Simplify right side
    79,734.64x = 8,319,923,047.63
  5. Step 5: Solve for x
    x = 8,319,923,047.63/79,734.64
  6. Step 6: Final answer
    x = 104,345.15

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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.