Home / 105,690.88-145,852.81-57,944.62

Finding the Fourth Proportional to 105,690.88, 145,852.81 and 57,944.62

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Solution

The fourth proportional to 105,690.88, 145,852.81 and 57,944.62 is: 79,963.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,690.88 : 145,852.81 = 57,944.62 : x
  2. Step 2: Convert to fraction form
    105,690.88/145,852.81 = 57,944.62/x
  3. Step 3: Cross multiply
    105,690.88x = 145,852.81 × 57,944.62
  4. Step 4: Simplify right side
    105,690.88x = 8,451,385,651.38
  5. Step 5: Solve for x
    x = 8,451,385,651.38/105,690.88
  6. Step 6: Final answer
    x = 79,963.24

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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.