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Finding the Fourth Proportional to 71,106.40, 106,608.40 and 39,951.20

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Solution

The fourth proportional to 71,106.40, 106,608.40 and 39,951.20 is: 59,898.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,106.40 : 106,608.40 = 39,951.20 : x
  2. Step 2: Convert to fraction form
    71,106.40/106,608.40 = 39,951.20/x
  3. Step 3: Cross multiply
    71,106.40x = 106,608.40 × 39,951.20
  4. Step 4: Simplify right side
    71,106.40x = 4,259,133,510.08
  5. Step 5: Solve for x
    x = 4,259,133,510.08/71,106.40
  6. Step 6: Final answer
    x = 59,898.03

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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.