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Finding the Fourth Proportional to 66,592.50, 91,790.89 and 45,075.48

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Solution

The fourth proportional to 66,592.50, 91,790.89 and 45,075.48 is: 62,131.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,592.50 : 91,790.89 = 45,075.48 : x
  2. Step 2: Convert to fraction form
    66,592.50/91,790.89 = 45,075.48/x
  3. Step 3: Cross multiply
    66,592.50x = 91,790.89 × 45,075.48
  4. Step 4: Simplify right side
    66,592.50x = 4,137,518,426.38
  5. Step 5: Solve for x
    x = 4,137,518,426.38/66,592.50
  6. Step 6: Final answer
    x = 62,131.90

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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.