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Finding the Fourth Proportional to 30,759.86, 46,139.79 and 8,573.30

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Solution

The fourth proportional to 30,759.86, 46,139.79 and 8,573.30 is: 12,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,759.86 : 46,139.79 = 8,573.30 : x
  2. Step 2: Convert to fraction form
    30,759.86/46,139.79 = 8,573.30/x
  3. Step 3: Cross multiply
    30,759.86x = 46,139.79 × 8,573.30
  4. Step 4: Simplify right side
    30,759.86x = 395,570,261.61
  5. Step 5: Solve for x
    x = 395,570,261.61/30,759.86
  6. Step 6: Final answer
    x = 12,859.95

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1.5x scale

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.