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Finding the Fourth Proportional to 72,192.92, 108,216.66 and 30,096.30

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Solution

The fourth proportional to 72,192.92, 108,216.66 and 30,096.30 is: 45,114.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,192.92 : 108,216.66 = 30,096.30 : x
  2. Step 2: Convert to fraction form
    72,192.92/108,216.66 = 30,096.30/x
  3. Step 3: Cross multiply
    72,192.92x = 108,216.66 × 30,096.30
  4. Step 4: Simplify right side
    72,192.92x = 3,256,921,064.36
  5. Step 5: Solve for x
    x = 3,256,921,064.36/72,192.92
  6. Step 6: Final answer
    x = 45,114.13

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1.5x scale

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.