Home / 105,686.28-145,847.22-57,941.64

Finding the Fourth Proportional to 105,686.28, 145,847.22 and 57,941.64

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Solution

The fourth proportional to 105,686.28, 145,847.22 and 57,941.64 is: 79,959.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,686.28 : 145,847.22 = 57,941.64 : x
  2. Step 2: Convert to fraction form
    105,686.28/145,847.22 = 57,941.64/x
  3. Step 3: Cross multiply
    105,686.28x = 145,847.22 × 57,941.64
  4. Step 4: Simplify right side
    105,686.28x = 8,450,627,116.24
  5. Step 5: Solve for x
    x = 8,450,627,116.24/105,686.28
  6. Step 6: Final answer
    x = 79,959.55

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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.