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Finding the Fourth Proportional to 64,644.36, 89,107.56 and 59,220.60

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Solution

The fourth proportional to 64,644.36, 89,107.56 and 59,220.60 is: 81,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,644.36 : 89,107.56 = 59,220.60 : x
  2. Step 2: Convert to fraction form
    64,644.36/89,107.56 = 59,220.60/x
  3. Step 3: Cross multiply
    64,644.36x = 89,107.56 × 59,220.60
  4. Step 4: Simplify right side
    64,644.36x = 5,277,003,167.74
  5. Step 5: Solve for x
    x = 5,277,003,167.74/64,644.36
  6. Step 6: Final answer
    x = 81,631.30

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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.