Home / 76,749.18-105,917.13-42,757.64

Finding the Fourth Proportional to 76,749.18, 105,917.13 and 42,757.64

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Solution

The fourth proportional to 76,749.18, 105,917.13 and 42,757.64 is: 59,007.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,749.18 : 105,917.13 = 42,757.64 : x
  2. Step 2: Convert to fraction form
    76,749.18/105,917.13 = 42,757.64/x
  3. Step 3: Cross multiply
    76,749.18x = 105,917.13 × 42,757.64
  4. Step 4: Simplify right side
    76,749.18x = 4,528,766,779.17
  5. Step 5: Solve for x
    x = 4,528,766,779.17/76,749.18
  6. Step 6: Final answer
    x = 59,007.37

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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.