Home / 62,991.90-86,898.19-40,312.71

Finding the Fourth Proportional to 62,991.90, 86,898.19 and 40,312.71

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Solution

The fourth proportional to 62,991.90, 86,898.19 and 40,312.71 is: 55,611.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,991.90 : 86,898.19 = 40,312.71 : x
  2. Step 2: Convert to fraction form
    62,991.90/86,898.19 = 40,312.71/x
  3. Step 3: Cross multiply
    62,991.90x = 86,898.19 × 40,312.71
  4. Step 4: Simplify right side
    62,991.90x = 3,503,101,532.99
  5. Step 5: Solve for x
    x = 3,503,101,532.99/62,991.90
  6. Step 6: Final answer
    x = 55,611.94

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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.