Home / 105,560.82-145,666.35-57,806.46

Finding the Fourth Proportional to 105,560.82, 145,666.35 and 57,806.46

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Solution

The fourth proportional to 105,560.82, 145,666.35 and 57,806.46 is: 79,768.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,560.82 : 145,666.35 = 57,806.46 : x
  2. Step 2: Convert to fraction form
    105,560.82/145,666.35 = 57,806.46/x
  3. Step 3: Cross multiply
    105,560.82x = 145,666.35 × 57,806.46
  4. Step 4: Simplify right side
    105,560.82x = 8,420,456,034.62
  5. Step 5: Solve for x
    x = 8,420,456,034.62/105,560.82
  6. Step 6: Final answer
    x = 79,768.76

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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.