Home / 66,983.36-92,429.20-39,755.28

Finding the Fourth Proportional to 66,983.36, 92,429.20 and 39,755.28

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Solution

The fourth proportional to 66,983.36, 92,429.20 and 39,755.28 is: 54,857.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,983.36 : 92,429.20 = 39,755.28 : x
  2. Step 2: Convert to fraction form
    66,983.36/92,429.20 = 39,755.28/x
  3. Step 3: Cross multiply
    66,983.36x = 92,429.20 × 39,755.28
  4. Step 4: Simplify right side
    66,983.36x = 3,674,548,726.18
  5. Step 5: Solve for x
    x = 3,674,548,726.18/66,983.36
  6. Step 6: Final answer
    x = 54,857.64

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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.