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Finding the Fourth Proportional to 66,369.62, 99,551.51 and 21,389.97

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Solution

The fourth proportional to 66,369.62, 99,551.51 and 21,389.97 is: 32,084.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,369.62 : 99,551.51 = 21,389.97 : x
  2. Step 2: Convert to fraction form
    66,369.62/99,551.51 = 21,389.97/x
  3. Step 3: Cross multiply
    66,369.62x = 99,551.51 × 21,389.97
  4. Step 4: Simplify right side
    66,369.62x = 2,129,403,705.40
  5. Step 5: Solve for x
    x = 2,129,403,705.40/66,369.62
  6. Step 6: Final answer
    x = 32,084.01

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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.