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Finding the Fourth Proportional to 64,969.20, 97,378.20 and 29,912.40

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Solution

The fourth proportional to 64,969.20, 97,378.20 and 29,912.40 is: 44,833.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,969.20 : 97,378.20 = 29,912.40 : x
  2. Step 2: Convert to fraction form
    64,969.20/97,378.20 = 29,912.40/x
  3. Step 3: Cross multiply
    64,969.20x = 97,378.20 × 29,912.40
  4. Step 4: Simplify right side
    64,969.20x = 2,912,815,669.68
  5. Step 5: Solve for x
    x = 2,912,815,669.68/64,969.20
  6. Step 6: Final answer
    x = 44,833.79

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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.