Home / 64,900.12-97,359.72-20,516.80

Finding the Fourth Proportional to 64,900.12, 97,359.72 and 20,516.80

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Solution

The fourth proportional to 64,900.12, 97,359.72 and 20,516.80 is: 30,778.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,900.12 : 97,359.72 = 20,516.80 : x
  2. Step 2: Convert to fraction form
    64,900.12/97,359.72 = 20,516.80/x
  3. Step 3: Cross multiply
    64,900.12x = 97,359.72 × 20,516.80
  4. Step 4: Simplify right side
    64,900.12x = 1,997,509,903.30
  5. Step 5: Solve for x
    x = 1,997,509,903.30/64,900.12
  6. Step 6: Final answer
    x = 30,778.22

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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.