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Finding the Fourth Proportional to 66,915.84, 92,112.10 and 57,837.06

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Solution

The fourth proportional to 66,915.84, 92,112.10 and 57,837.06 is: 79,614.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,915.84 : 92,112.10 = 57,837.06 : x
  2. Step 2: Convert to fraction form
    66,915.84/92,112.10 = 57,837.06/x
  3. Step 3: Cross multiply
    66,915.84x = 92,112.10 × 57,837.06
  4. Step 4: Simplify right side
    66,915.84x = 5,327,493,054.43
  5. Step 5: Solve for x
    x = 5,327,493,054.43/66,915.84
  6. Step 6: Final answer
    x = 79,614.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.