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Finding the Fourth Proportional to 64,019.20, 96,028.80 and 57,474.40

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Solution

The fourth proportional to 64,019.20, 96,028.80 and 57,474.40 is: 86,211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,019.20 : 96,028.80 = 57,474.40 : x
  2. Step 2: Convert to fraction form
    64,019.20/96,028.80 = 57,474.40/x
  3. Step 3: Cross multiply
    64,019.20x = 96,028.80 × 57,474.40
  4. Step 4: Simplify right side
    64,019.20x = 5,519,197,662.72
  5. Step 5: Solve for x
    x = 5,519,197,662.72/64,019.20
  6. Step 6: Final answer
    x = 86,211.60

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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.