Home / 40,728.41-61,102.18-12,647.02

Finding the Fourth Proportional to 40,728.41, 61,102.18 and 12,647.02

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Solution

The fourth proportional to 40,728.41, 61,102.18 and 12,647.02 is: 18,973.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.41 : 61,102.18 = 12,647.02 : x
  2. Step 2: Convert to fraction form
    40,728.41/61,102.18 = 12,647.02/x
  3. Step 3: Cross multiply
    40,728.41x = 61,102.18 × 12,647.02
  4. Step 4: Simplify right side
    40,728.41x = 772,760,186.99
  5. Step 5: Solve for x
    x = 772,760,186.99/40,728.41
  6. Step 6: Final answer
    x = 18,973.49

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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.