Home / 72,923.24-109,384.78-28,518.78

Finding the Fourth Proportional to 72,923.24, 109,384.78 and 28,518.78

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Solution

The fourth proportional to 72,923.24, 109,384.78 and 28,518.78 is: 42,778.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,923.24 : 109,384.78 = 28,518.78 : x
  2. Step 2: Convert to fraction form
    72,923.24/109,384.78 = 28,518.78/x
  3. Step 3: Cross multiply
    72,923.24x = 109,384.78 × 28,518.78
  4. Step 4: Simplify right side
    72,923.24x = 3,119,520,868.54
  5. Step 5: Solve for x
    x = 3,119,520,868.54/72,923.24
  6. Step 6: Final answer
    x = 42,778.15

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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.