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Finding the Fourth Proportional to 66,126.84, 99,644.85 and 54,696.12

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Solution

The fourth proportional to 66,126.84, 99,644.85 and 54,696.12 is: 82,420.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,126.84 : 99,644.85 = 54,696.12 : x
  2. Step 2: Convert to fraction form
    66,126.84/99,644.85 = 54,696.12/x
  3. Step 3: Cross multiply
    66,126.84x = 99,644.85 × 54,696.12
  4. Step 4: Simplify right side
    66,126.84x = 5,450,186,672.98
  5. Step 5: Solve for x
    x = 5,450,186,672.98/66,126.84
  6. Step 6: Final answer
    x = 82,420.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.