Home / 40,728.91-61,102.93-12,647.52

Finding the Fourth Proportional to 40,728.91, 61,102.93 and 12,647.52

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Solution

The fourth proportional to 40,728.91, 61,102.93 and 12,647.52 is: 18,974.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.91 : 61,102.93 = 12,647.52 : x
  2. Step 2: Convert to fraction form
    40,728.91/61,102.93 = 12,647.52/x
  3. Step 3: Cross multiply
    40,728.91x = 61,102.93 × 12,647.52
  4. Step 4: Simplify right side
    40,728.91x = 772,800,529.23
  5. Step 5: Solve for x
    x = 772,800,529.23/40,728.91
  6. Step 6: Final answer
    x = 18,974.25

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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.