Home / 72,563.07-100,136.21-40,731.15

Finding the Fourth Proportional to 72,563.07, 100,136.21 and 40,731.15

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Solution

The fourth proportional to 72,563.07, 100,136.21 and 40,731.15 is: 56,208.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,563.07 : 100,136.21 = 40,731.15 : x
  2. Step 2: Convert to fraction form
    72,563.07/100,136.21 = 40,731.15/x
  3. Step 3: Cross multiply
    72,563.07x = 100,136.21 × 40,731.15
  4. Step 4: Simplify right side
    72,563.07x = 4,078,662,786.29
  5. Step 5: Solve for x
    x = 4,078,662,786.29/72,563.07
  6. Step 6: Final answer
    x = 56,208.52

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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.