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Finding the Fourth Proportional to 55,579.77, 76,696.88 and 31,708.67

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Solution

The fourth proportional to 55,579.77, 76,696.88 and 31,708.67 is: 43,756.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,579.77 : 76,696.88 = 31,708.67 : x
  2. Step 2: Convert to fraction form
    55,579.77/76,696.88 = 31,708.67/x
  3. Step 3: Cross multiply
    55,579.77x = 76,696.88 × 31,708.67
  4. Step 4: Simplify right side
    55,579.77x = 2,431,955,515.92
  5. Step 5: Solve for x
    x = 2,431,955,515.92/55,579.77
  6. Step 6: Final answer
    x = 43,756.13

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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.