Home / 76,626.83-105,749.78-42,642.89

Finding the Fourth Proportional to 76,626.83, 105,749.78 and 42,642.89

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Solution

The fourth proportional to 76,626.83, 105,749.78 and 42,642.89 is: 58,849.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,626.83 : 105,749.78 = 42,642.89 : x
  2. Step 2: Convert to fraction form
    76,626.83/105,749.78 = 42,642.89/x
  3. Step 3: Cross multiply
    76,626.83x = 105,749.78 × 42,642.89
  4. Step 4: Simplify right side
    76,626.83x = 4,509,476,022.85
  5. Step 5: Solve for x
    x = 4,509,476,022.85/76,626.83
  6. Step 6: Final answer
    x = 58,849.83

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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.