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Finding the Fourth Proportional to 65,520, 90,419.52 and 37,226.88

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Solution

The fourth proportional to 65,520, 90,419.52 and 37,226.88 is: 51,374.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,520 : 90,419.52 = 37,226.88 : x
  2. Step 2: Convert to fraction form
    65,520/90,419.52 = 37,226.88/x
  3. Step 3: Cross multiply
    65,520x = 90,419.52 × 37,226.88
  4. Step 4: Simplify right side
    65,520x = 3,366,036,620.70
  5. Step 5: Solve for x
    x = 3,366,036,620.70/65,520
  6. Step 6: Final answer
    x = 51,374.19

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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.