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Finding the Fourth Proportional to 64,955.54, 97,436.01 and 20,581.31

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Solution

The fourth proportional to 64,955.54, 97,436.01 and 20,581.31 is: 30,872.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,955.54 : 97,436.01 = 20,581.31 : x
  2. Step 2: Convert to fraction form
    64,955.54/97,436.01 = 20,581.31/x
  3. Step 3: Cross multiply
    64,955.54x = 97,436.01 × 20,581.31
  4. Step 4: Simplify right side
    64,955.54x = 2,005,360,726.97
  5. Step 5: Solve for x
    x = 2,005,360,726.97/64,955.54
  6. Step 6: Final answer
    x = 30,872.82

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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.