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Finding the Fourth Proportional to 65,288.90, 90,052.02 and 59,928.36

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Solution

The fourth proportional to 65,288.90, 90,052.02 and 59,928.36 is: 82,658.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,288.90 : 90,052.02 = 59,928.36 : x
  2. Step 2: Convert to fraction form
    65,288.90/90,052.02 = 59,928.36/x
  3. Step 3: Cross multiply
    65,288.90x = 90,052.02 × 59,928.36
  4. Step 4: Simplify right side
    65,288.90x = 5,396,669,873.29
  5. Step 5: Solve for x
    x = 5,396,669,873.29/65,288.90
  6. Step 6: Final answer
    x = 82,658.31

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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.