Home / 105,406.33-145,458.84-57,659.26

Finding the Fourth Proportional to 105,406.33, 145,458.84 and 57,659.26

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Solution

The fourth proportional to 105,406.33, 145,458.84 and 57,659.26 is: 79,568.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,406.33 : 145,458.84 = 57,659.26 : x
  2. Step 2: Convert to fraction form
    105,406.33/145,458.84 = 57,659.26/x
  3. Step 3: Cross multiply
    105,406.33x = 145,458.84 × 57,659.26
  4. Step 4: Simplify right side
    105,406.33x = 8,387,049,074.86
  5. Step 5: Solve for x
    x = 8,387,049,074.86/105,406.33
  6. Step 6: Final answer
    x = 79,568.74

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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.