Home / 76,700.25-105,856.07-43,172.73

Finding the Fourth Proportional to 76,700.25, 105,856.07 and 43,172.73

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Solution

The fourth proportional to 76,700.25, 105,856.07 and 43,172.73 is: 59,583.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,700.25 : 105,856.07 = 43,172.73 : x
  2. Step 2: Convert to fraction form
    76,700.25/105,856.07 = 43,172.73/x
  3. Step 3: Cross multiply
    76,700.25x = 105,856.07 × 43,172.73
  4. Step 4: Simplify right side
    76,700.25x = 4,570,095,313.11
  5. Step 5: Solve for x
    x = 4,570,095,313.11/76,700.25
  6. Step 6: Final answer
    x = 59,583.84

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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.