Home / 76,543.22-105,631.41-43,009.78

Finding the Fourth Proportional to 76,543.22, 105,631.41 and 43,009.78

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Solution

The fourth proportional to 76,543.22, 105,631.41 and 43,009.78 is: 59,354.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,543.22 : 105,631.41 = 43,009.78 : x
  2. Step 2: Convert to fraction form
    76,543.22/105,631.41 = 43,009.78/x
  3. Step 3: Cross multiply
    76,543.22x = 105,631.41 × 43,009.78
  4. Step 4: Simplify right side
    76,543.22x = 4,543,183,705.19
  5. Step 5: Solve for x
    x = 4,543,183,705.19/76,543.22
  6. Step 6: Final answer
    x = 59,354.49

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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.