Home / 76,540.08-105,635.16-43,012.56

Finding the Fourth Proportional to 76,540.08, 105,635.16 and 43,012.56

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Solution

The fourth proportional to 76,540.08, 105,635.16 and 43,012.56 is: 59,362.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,540.08 : 105,635.16 = 43,012.56 : x
  2. Step 2: Convert to fraction form
    76,540.08/105,635.16 = 43,012.56/x
  3. Step 3: Cross multiply
    76,540.08x = 105,635.16 × 43,012.56
  4. Step 4: Simplify right side
    76,540.08x = 4,543,638,657.61
  5. Step 5: Solve for x
    x = 4,543,638,657.61/76,540.08
  6. Step 6: Final answer
    x = 59,362.87

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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.