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Finding the Fourth Proportional to 66,086.51, 91,203.82 and 37,406.12

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Solution

The fourth proportional to 66,086.51, 91,203.82 and 37,406.12 is: 51,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,086.51 : 91,203.82 = 37,406.12 : x
  2. Step 2: Convert to fraction form
    66,086.51/91,203.82 = 37,406.12/x
  3. Step 3: Cross multiply
    66,086.51x = 91,203.82 × 37,406.12
  4. Step 4: Simplify right side
    66,086.51x = 3,411,580,485.84
  5. Step 5: Solve for x
    x = 3,411,580,485.84/66,086.51
  6. Step 6: Final answer
    x = 51,622.95

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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.