Home / 40,128.71-60,192.91-12,048.64

Finding the Fourth Proportional to 40,128.71, 60,192.91 and 12,048.64

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Solution

The fourth proportional to 40,128.71, 60,192.91 and 12,048.64 is: 18,072.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,128.71 : 60,192.91 = 12,048.64 : x
  2. Step 2: Convert to fraction form
    40,128.71/60,192.91 = 12,048.64/x
  3. Step 3: Cross multiply
    40,128.71x = 60,192.91 × 12,048.64
  4. Step 4: Simplify right side
    40,128.71x = 725,242,703.14
  5. Step 5: Solve for x
    x = 725,242,703.14/40,128.71
  6. Step 6: Final answer
    x = 18,072.91

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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.