Home / 76,189.71-105,137.70-42,197.66

Finding the Fourth Proportional to 76,189.71, 105,137.70 and 42,197.66

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Solution

The fourth proportional to 76,189.71, 105,137.70 and 42,197.66 is: 58,230.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,189.71 : 105,137.70 = 42,197.66 : x
  2. Step 2: Convert to fraction form
    76,189.71/105,137.70 = 42,197.66/x
  3. Step 3: Cross multiply
    76,189.71x = 105,137.70 × 42,197.66
  4. Step 4: Simplify right side
    76,189.71x = 4,436,564,628.12
  5. Step 5: Solve for x
    x = 4,436,564,628.12/76,189.71
  6. Step 6: Final answer
    x = 58,230.49

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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.