Home / 66,996.77-92,448.74-40,138.59

Finding the Fourth Proportional to 66,996.77, 92,448.74 and 40,138.59

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Solution

The fourth proportional to 66,996.77, 92,448.74 and 40,138.59 is: 55,387.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,996.77 : 92,448.74 = 40,138.59 : x
  2. Step 2: Convert to fraction form
    66,996.77/92,448.74 = 40,138.59/x
  3. Step 3: Cross multiply
    66,996.77x = 92,448.74 × 40,138.59
  4. Step 4: Simplify right side
    66,996.77x = 3,710,761,997.88
  5. Step 5: Solve for x
    x = 3,710,761,997.88/66,996.77
  6. Step 6: Final answer
    x = 55,387.18

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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.