Home / 40,707.70-61,039.47-12,615.68

Finding the Fourth Proportional to 40,707.70, 61,039.47 and 12,615.68

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Solution

The fourth proportional to 40,707.70, 61,039.47 and 12,615.68 is: 18,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,707.70 : 61,039.47 = 12,615.68 : x
  2. Step 2: Convert to fraction form
    40,707.70/61,039.47 = 12,615.68/x
  3. Step 3: Cross multiply
    40,707.70x = 61,039.47 × 12,615.68
  4. Step 4: Simplify right side
    40,707.70x = 770,054,620.80
  5. Step 5: Solve for x
    x = 770,054,620.80/40,707.70
  6. Step 6: Final answer
    x = 18,916.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.