Home / 76,775.23-105,947.07-42,781.96

Finding the Fourth Proportional to 76,775.23, 105,947.07 and 42,781.96

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Solution

The fourth proportional to 76,775.23, 105,947.07 and 42,781.96 is: 59,037.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,775.23 : 105,947.07 = 42,781.96 : x
  2. Step 2: Convert to fraction form
    76,775.23/105,947.07 = 42,781.96/x
  3. Step 3: Cross multiply
    76,775.23x = 105,947.07 × 42,781.96
  4. Step 4: Simplify right side
    76,775.23x = 4,532,622,781.12
  5. Step 5: Solve for x
    x = 4,532,622,781.12/76,775.23
  6. Step 6: Final answer
    x = 59,037.57

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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.