Home / 105,512.87-145,608.19-57,770.66

Finding the Fourth Proportional to 105,512.87, 145,608.19 and 57,770.66

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Solution

The fourth proportional to 105,512.87, 145,608.19 and 57,770.66 is: 79,723.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,512.87 : 145,608.19 = 57,770.66 : x
  2. Step 2: Convert to fraction form
    105,512.87/145,608.19 = 57,770.66/x
  3. Step 3: Cross multiply
    105,512.87x = 145,608.19 × 57,770.66
  4. Step 4: Simplify right side
    105,512.87x = 8,411,880,584.83
  5. Step 5: Solve for x
    x = 8,411,880,584.83/105,512.87
  6. Step 6: Final answer
    x = 79,723.74

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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.