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Finding the Fourth Proportional to 61,150.84, 91,699.08 and 21,173.56

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Solution

The fourth proportional to 61,150.84, 91,699.08 and 21,173.56 is: 31,750.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,150.84 : 91,699.08 = 21,173.56 : x
  2. Step 2: Convert to fraction form
    61,150.84/91,699.08 = 21,173.56/x
  3. Step 3: Cross multiply
    61,150.84x = 91,699.08 × 21,173.56
  4. Step 4: Simplify right side
    61,150.84x = 1,941,595,972.32
  5. Step 5: Solve for x
    x = 1,941,595,972.32/61,150.84
  6. Step 6: Final answer
    x = 31,750.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.