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Finding the Fourth Proportional to 65,396.19, 98,103.52 and 21,008.07

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Solution

The fourth proportional to 65,396.19, 98,103.52 and 21,008.07 is: 31,515.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,396.19 : 98,103.52 = 21,008.07 : x
  2. Step 2: Convert to fraction form
    65,396.19/98,103.52 = 21,008.07/x
  3. Step 3: Cross multiply
    65,396.19x = 98,103.52 × 21,008.07
  4. Step 4: Simplify right side
    65,396.19x = 2,060,965,641.67
  5. Step 5: Solve for x
    x = 2,060,965,641.67/65,396.19
  6. Step 6: Final answer
    x = 31,515.07

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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.