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Finding the Fourth Proportional to 109,599.06, 164,299.86 and 39,429

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Solution

The fourth proportional to 109,599.06, 164,299.86 and 39,429 is: 59,107.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,599.06 : 164,299.86 = 39,429 : x
  2. Step 2: Convert to fraction form
    109,599.06/164,299.86 = 39,429/x
  3. Step 3: Cross multiply
    109,599.06x = 164,299.86 × 39,429
  4. Step 4: Simplify right side
    109,599.06x = 6,478,179,179.94
  5. Step 5: Solve for x
    x = 6,478,179,179.94/109,599.06
  6. Step 6: Final answer
    x = 59,107.98

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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.