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Finding the Fourth Proportional to 66,554.72, 91,719.24 and 47,659.04

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Solution

The fourth proportional to 66,554.72, 91,719.24 and 47,659.04 is: 65,679.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,554.72 : 91,719.24 = 47,659.04 : x
  2. Step 2: Convert to fraction form
    66,554.72/91,719.24 = 47,659.04/x
  3. Step 3: Cross multiply
    66,554.72x = 91,719.24 × 47,659.04
  4. Step 4: Simplify right side
    66,554.72x = 4,371,250,927.93
  5. Step 5: Solve for x
    x = 4,371,250,927.93/66,554.72
  6. Step 6: Final answer
    x = 65,679.05

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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.