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Finding the Fourth Proportional to 64,971.45, 89,660.60 and 35,163.45

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Solution

The fourth proportional to 64,971.45, 89,660.60 and 35,163.45 is: 48,525.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,971.45 : 89,660.60 = 35,163.45 : x
  2. Step 2: Convert to fraction form
    64,971.45/89,660.60 = 35,163.45/x
  3. Step 3: Cross multiply
    64,971.45x = 89,660.60 × 35,163.45
  4. Step 4: Simplify right side
    64,971.45x = 3,152,776,025.07
  5. Step 5: Solve for x
    x = 3,152,776,025.07/64,971.45
  6. Step 6: Final answer
    x = 48,525.56

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1.5x scale

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.