Home / 66,386.36-91,617.70-40,555.96

Finding the Fourth Proportional to 66,386.36, 91,617.70 and 40,555.96

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Solution

The fourth proportional to 66,386.36, 91,617.70 and 40,555.96 is: 55,969.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,386.36 : 91,617.70 = 40,555.96 : x
  2. Step 2: Convert to fraction form
    66,386.36/91,617.70 = 40,555.96/x
  3. Step 3: Cross multiply
    66,386.36x = 91,617.70 × 40,555.96
  4. Step 4: Simplify right side
    66,386.36x = 3,715,643,776.49
  5. Step 5: Solve for x
    x = 3,715,643,776.49/66,386.36
  6. Step 6: Final answer
    x = 55,969.99

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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.