Home / 55,516.86-76,615.25-31,639.68

Finding the Fourth Proportional to 55,516.86, 76,615.25 and 31,639.68

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Solution

The fourth proportional to 55,516.86, 76,615.25 and 31,639.68 is: 43,663.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,516.86 : 76,615.25 = 31,639.68 : x
  2. Step 2: Convert to fraction form
    55,516.86/76,615.25 = 31,639.68/x
  3. Step 3: Cross multiply
    55,516.86x = 76,615.25 × 31,639.68
  4. Step 4: Simplify right side
    55,516.86x = 2,424,081,834.92
  5. Step 5: Solve for x
    x = 2,424,081,834.92/55,516.86
  6. Step 6: Final answer
    x = 43,663.89

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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.