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Finding the Fourth Proportional to 64,995.48, 97,507.80 and 20,623.68

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Solution

The fourth proportional to 64,995.48, 97,507.80 and 20,623.68 is: 30,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,995.48 : 97,507.80 = 20,623.68 : x
  2. Step 2: Convert to fraction form
    64,995.48/97,507.80 = 20,623.68/x
  3. Step 3: Cross multiply
    64,995.48x = 97,507.80 × 20,623.68
  4. Step 4: Simplify right side
    64,995.48x = 2,010,969,664.70
  5. Step 5: Solve for x
    x = 2,010,969,664.70/64,995.48
  6. Step 6: Final answer
    x = 30,940.15

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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.