Home / 76,137.87-105,035.40-49,289.04

Finding the Fourth Proportional to 76,137.87, 105,035.40 and 49,289.04

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Solution

The fourth proportional to 76,137.87, 105,035.40 and 49,289.04 is: 67,996.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,137.87 : 105,035.40 = 49,289.04 : x
  2. Step 2: Convert to fraction form
    76,137.87/105,035.40 = 49,289.04/x
  3. Step 3: Cross multiply
    76,137.87x = 105,035.40 × 49,289.04
  4. Step 4: Simplify right side
    76,137.87x = 5,177,094,032.02
  5. Step 5: Solve for x
    x = 5,177,094,032.02/76,137.87
  6. Step 6: Final answer
    x = 67,996.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.