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Finding the Fourth Proportional to 66,579.48, 91,879.80 and 37,898.16

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Solution

The fourth proportional to 66,579.48, 91,879.80 and 37,898.16 is: 52,299.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,579.48 : 91,879.80 = 37,898.16 : x
  2. Step 2: Convert to fraction form
    66,579.48/91,879.80 = 37,898.16/x
  3. Step 3: Cross multiply
    66,579.48x = 91,879.80 × 37,898.16
  4. Step 4: Simplify right side
    66,579.48x = 3,482,075,361.17
  5. Step 5: Solve for x
    x = 3,482,075,361.17/66,579.48
  6. Step 6: Final answer
    x = 52,299.53

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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.