Home / 76,500.86-105,568.91-42,508.51

Finding the Fourth Proportional to 76,500.86, 105,568.91 and 42,508.51

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Solution

The fourth proportional to 76,500.86, 105,568.91 and 42,508.51 is: 58,660.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,500.86 : 105,568.91 = 42,508.51 : x
  2. Step 2: Convert to fraction form
    76,500.86/105,568.91 = 42,508.51/x
  3. Step 3: Cross multiply
    76,500.86x = 105,568.91 × 42,508.51
  4. Step 4: Simplify right side
    76,500.86x = 4,487,576,749.37
  5. Step 5: Solve for x
    x = 4,487,576,749.37/76,500.86
  6. Step 6: Final answer
    x = 58,660.48

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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.