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Finding the Fourth Proportional to 64,388.80, 96,606.40 and 28,847.20

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Solution

The fourth proportional to 64,388.80, 96,606.40 and 28,847.20 is: 43,281.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,388.80 : 96,606.40 = 28,847.20 : x
  2. Step 2: Convert to fraction form
    64,388.80/96,606.40 = 28,847.20/x
  3. Step 3: Cross multiply
    64,388.80x = 96,606.40 × 28,847.20
  4. Step 4: Simplify right side
    64,388.80x = 2,786,824,142.08
  5. Step 5: Solve for x
    x = 2,786,824,142.08/64,388.80
  6. Step 6: Final answer
    x = 43,281.19

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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.