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Finding the Fourth Proportional to 77,325.72, 106,760.88 and 59,388.64

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Solution

The fourth proportional to 77,325.72, 106,760.88 and 59,388.64 is: 81,995.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,325.72 : 106,760.88 = 59,388.64 : x
  2. Step 2: Convert to fraction form
    77,325.72/106,760.88 = 59,388.64/x
  3. Step 3: Cross multiply
    77,325.72x = 106,760.88 × 59,388.64
  4. Step 4: Simplify right side
    77,325.72x = 6,340,383,468.40
  5. Step 5: Solve for x
    x = 6,340,383,468.40/77,325.72
  6. Step 6: Final answer
    x = 81,995.79

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1.5x scale

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.