Home / 66,847.53-92,240.81-39,980.24

Finding the Fourth Proportional to 66,847.53, 92,240.81 and 39,980.24

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Solution

The fourth proportional to 66,847.53, 92,240.81 and 39,980.24 is: 55,167.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,847.53 : 92,240.81 = 39,980.24 : x
  2. Step 2: Convert to fraction form
    66,847.53/92,240.81 = 39,980.24/x
  3. Step 3: Cross multiply
    66,847.53x = 92,240.81 × 39,980.24
  4. Step 4: Simplify right side
    66,847.53x = 3,687,809,260.39
  5. Step 5: Solve for x
    x = 3,687,809,260.39/66,847.53
  6. Step 6: Final answer
    x = 55,167.47

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Half scale
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Double scale
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Similar ratio
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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.