Home / 76,639.29-105,761.19-43,105.29

Finding the Fourth Proportional to 76,639.29, 105,761.19 and 43,105.29

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Solution

The fourth proportional to 76,639.29, 105,761.19 and 43,105.29 is: 59,484.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,639.29 : 105,761.19 = 43,105.29 : x
  2. Step 2: Convert to fraction form
    76,639.29/105,761.19 = 43,105.29/x
  3. Step 3: Cross multiply
    76,639.29x = 105,761.19 × 43,105.29
  4. Step 4: Simplify right side
    76,639.29x = 4,558,866,765.70
  5. Step 5: Solve for x
    x = 4,558,866,765.70/76,639.29
  6. Step 6: Final answer
    x = 59,484.72

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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.