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Finding the Fourth Proportional to 66,486.51, 91,751.24 and 36,271.82

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Solution

The fourth proportional to 66,486.51, 91,751.24 and 36,271.82 is: 50,055.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,486.51 : 91,751.24 = 36,271.82 : x
  2. Step 2: Convert to fraction form
    66,486.51/91,751.24 = 36,271.82/x
  3. Step 3: Cross multiply
    66,486.51x = 91,751.24 × 36,271.82
  4. Step 4: Simplify right side
    66,486.51x = 3,327,984,782.11
  5. Step 5: Solve for x
    x = 3,327,984,782.11/66,486.51
  6. Step 6: Final answer
    x = 50,055.04

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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.