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Finding the Fourth Proportional to 66,062.50, 99,104.07 and 21,679.16

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Solution

The fourth proportional to 66,062.50, 99,104.07 and 21,679.16 is: 32,522.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,062.50 : 99,104.07 = 21,679.16 : x
  2. Step 2: Convert to fraction form
    66,062.50/99,104.07 = 21,679.16/x
  3. Step 3: Cross multiply
    66,062.50x = 99,104.07 × 21,679.16
  4. Step 4: Simplify right side
    66,062.50x = 2,148,492,990.18
  5. Step 5: Solve for x
    x = 2,148,492,990.18/66,062.50
  6. Step 6: Final answer
    x = 32,522.13

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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.