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Finding the Fourth Proportional to 66,402, 91,633.56 and 36,187.59

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Solution

The fourth proportional to 66,402, 91,633.56 and 36,187.59 is: 49,938.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,402 : 91,633.56 = 36,187.59 : x
  2. Step 2: Convert to fraction form
    66,402/91,633.56 = 36,187.59/x
  3. Step 3: Cross multiply
    66,402x = 91,633.56 × 36,187.59
  4. Step 4: Simplify right side
    66,402x = 3,315,997,699.52
  5. Step 5: Solve for x
    x = 3,315,997,699.52/66,402
  6. Step 6: Final answer
    x = 49,938.22

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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.