Home / 66,847.41-92,240.64-39,980.12

Finding the Fourth Proportional to 66,847.41, 92,240.64 and 39,980.12

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Solution

The fourth proportional to 66,847.41, 92,240.64 and 39,980.12 is: 55,167.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,847.41 : 92,240.64 = 39,980.12 : x
  2. Step 2: Convert to fraction form
    66,847.41/92,240.64 = 39,980.12/x
  3. Step 3: Cross multiply
    66,847.41x = 92,240.64 × 39,980.12
  4. Step 4: Simplify right side
    66,847.41x = 3,687,791,394.87
  5. Step 5: Solve for x
    x = 3,687,791,394.87/66,847.41
  6. Step 6: Final answer
    x = 55,167.30

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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.