Home / 66,991.36-92,429.12-43,131.84

Finding the Fourth Proportional to 66,991.36, 92,429.12 and 43,131.84

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Solution

The fourth proportional to 66,991.36, 92,429.12 and 43,131.84 is: 59,509.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,991.36 : 92,429.12 = 43,131.84 : x
  2. Step 2: Convert to fraction form
    66,991.36/92,429.12 = 43,131.84/x
  3. Step 3: Cross multiply
    66,991.36x = 92,429.12 × 43,131.84
  4. Step 4: Simplify right side
    66,991.36x = 3,986,638,015.18
  5. Step 5: Solve for x
    x = 3,986,638,015.18/66,991.36
  6. Step 6: Final answer
    x = 59,509.73

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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.