Home / 81,429.43-112,384.49-45,621.87

Finding the Fourth Proportional to 81,429.43, 112,384.49 and 45,621.87

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Solution

The fourth proportional to 81,429.43, 112,384.49 and 45,621.87 is: 62,964.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,429.43 : 112,384.49 = 45,621.87 : x
  2. Step 2: Convert to fraction form
    81,429.43/112,384.49 = 45,621.87/x
  3. Step 3: Cross multiply
    81,429.43x = 112,384.49 × 45,621.87
  4. Step 4: Simplify right side
    81,429.43x = 5,127,190,592.80
  5. Step 5: Solve for x
    x = 5,127,190,592.80/81,429.43
  6. Step 6: Final answer
    x = 62,964.83

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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.