Home / 105,503.82-145,595.28-57,757.17

Finding the Fourth Proportional to 105,503.82, 145,595.28 and 57,757.17

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Solution

The fourth proportional to 105,503.82, 145,595.28 and 57,757.17 is: 79,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,503.82 : 145,595.28 = 57,757.17 : x
  2. Step 2: Convert to fraction form
    105,503.82/145,595.28 = 57,757.17/x
  3. Step 3: Cross multiply
    105,503.82x = 145,595.28 × 57,757.17
  4. Step 4: Simplify right side
    105,503.82x = 8,409,171,528.80
  5. Step 5: Solve for x
    x = 8,409,171,528.80/105,503.82
  6. Step 6: Final answer
    x = 79,704.90

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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.