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Finding the Fourth Proportional to 66,538.60, 99,807.90 and 27,075.40

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Solution

The fourth proportional to 66,538.60, 99,807.90 and 27,075.40 is: 40,613.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,538.60 : 99,807.90 = 27,075.40 : x
  2. Step 2: Convert to fraction form
    66,538.60/99,807.90 = 27,075.40/x
  3. Step 3: Cross multiply
    66,538.60x = 99,807.90 × 27,075.40
  4. Step 4: Simplify right side
    66,538.60x = 2,702,338,815.66
  5. Step 5: Solve for x
    x = 2,702,338,815.66/66,538.60
  6. Step 6: Final answer
    x = 40,613.10

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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.