Home / 66,025.40-91,097.47-39,145.55

Finding the Fourth Proportional to 66,025.40, 91,097.47 and 39,145.55

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Solution

The fourth proportional to 66,025.40, 91,097.47 and 39,145.55 is: 54,010.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,025.40 : 91,097.47 = 39,145.55 : x
  2. Step 2: Convert to fraction form
    66,025.40/91,097.47 = 39,145.55/x
  3. Step 3: Cross multiply
    66,025.40x = 91,097.47 × 39,145.55
  4. Step 4: Simplify right side
    66,025.40x = 3,566,060,566.76
  5. Step 5: Solve for x
    x = 3,566,060,566.76/66,025.40
  6. Step 6: Final answer
    x = 54,010.43

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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.