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Finding the Fourth Proportional to 65,589.96, 98,384.31 and 21,215.73

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Solution

The fourth proportional to 65,589.96, 98,384.31 and 21,215.73 is: 31,823.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,589.96 : 98,384.31 = 21,215.73 : x
  2. Step 2: Convert to fraction form
    65,589.96/98,384.31 = 21,215.73/x
  3. Step 3: Cross multiply
    65,589.96x = 98,384.31 × 21,215.73
  4. Step 4: Simplify right side
    65,589.96x = 2,087,294,957.20
  5. Step 5: Solve for x
    x = 2,087,294,957.20/65,589.96
  6. Step 6: Final answer
    x = 31,823.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.