Home / 69,306.72-103,944.40-31,830.77

Finding the Fourth Proportional to 69,306.72, 103,944.40 and 31,830.77

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Solution

The fourth proportional to 69,306.72, 103,944.40 and 31,830.77 is: 47,738.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,306.72 : 103,944.40 = 31,830.77 : x
  2. Step 2: Convert to fraction form
    69,306.72/103,944.40 = 31,830.77/x
  3. Step 3: Cross multiply
    69,306.72x = 103,944.40 × 31,830.77
  4. Step 4: Simplify right side
    69,306.72x = 3,308,630,289.19
  5. Step 5: Solve for x
    x = 3,308,630,289.19/69,306.72
  6. Step 6: Final answer
    x = 47,738.95

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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.