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Finding the Fourth Proportional to 66,855.04, 92,259.92 and 39,998.64

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Solution

The fourth proportional to 66,855.04, 92,259.92 and 39,998.64 is: 55,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,855.04 : 92,259.92 = 39,998.64 : x
  2. Step 2: Convert to fraction form
    66,855.04/92,259.92 = 39,998.64/x
  3. Step 3: Cross multiply
    66,855.04x = 92,259.92 × 39,998.64
  4. Step 4: Simplify right side
    66,855.04x = 3,690,271,326.51
  5. Step 5: Solve for x
    x = 3,690,271,326.51/66,855.04
  6. Step 6: Final answer
    x = 55,198.10

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1.5x scale

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.