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Finding the Fourth Proportional to 64,239.60, 96,359.40 and 53,353.20

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Solution

The fourth proportional to 64,239.60, 96,359.40 and 53,353.20 is: 80,029.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,239.60 : 96,359.40 = 53,353.20 : x
  2. Step 2: Convert to fraction form
    64,239.60/96,359.40 = 53,353.20/x
  3. Step 3: Cross multiply
    64,239.60x = 96,359.40 × 53,353.20
  4. Step 4: Simplify right side
    64,239.60x = 5,141,082,340.08
  5. Step 5: Solve for x
    x = 5,141,082,340.08/64,239.60
  6. Step 6: Final answer
    x = 80,029.80

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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.