Home / 66,386.40-91,605.60-39,525.12

Finding the Fourth Proportional to 66,386.40, 91,605.60 and 39,525.12

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Solution

The fourth proportional to 66,386.40, 91,605.60 and 39,525.12 is: 54,540.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,386.40 : 91,605.60 = 39,525.12 : x
  2. Step 2: Convert to fraction form
    66,386.40/91,605.60 = 39,525.12/x
  3. Step 3: Cross multiply
    66,386.40x = 91,605.60 × 39,525.12
  4. Step 4: Simplify right side
    66,386.40x = 3,620,722,332.67
  5. Step 5: Solve for x
    x = 3,620,722,332.67/66,386.40
  6. Step 6: Final answer
    x = 54,540.12

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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.