Home / 71,946.66-99,289.06-40,121.68

Finding the Fourth Proportional to 71,946.66, 99,289.06 and 40,121.68

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Solution

The fourth proportional to 71,946.66, 99,289.06 and 40,121.68 is: 55,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,946.66 : 99,289.06 = 40,121.68 : x
  2. Step 2: Convert to fraction form
    71,946.66/99,289.06 = 40,121.68/x
  3. Step 3: Cross multiply
    71,946.66x = 99,289.06 × 40,121.68
  4. Step 4: Simplify right side
    71,946.66x = 3,983,643,892.82
  5. Step 5: Solve for x
    x = 3,983,643,892.82/71,946.66
  6. Step 6: Final answer
    x = 55,369.41

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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.