Home / 72,171,330.30-108,256,995.45-20,355,832.80

Finding the Fourth Proportional to 72,171,330.30, 108,256,995.45 and 20,355,832.80

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Solution

The fourth proportional to 72,171,330.30, 108,256,995.45 and 20,355,832.80 is: 30,533,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171,330.30 : 108,256,995.45 = 20,355,832.80 : x
  2. Step 2: Convert to fraction form
    72,171,330.30/108,256,995.45 = 20,355,832.80/x
  3. Step 3: Cross multiply
    72,171,330.30x = 108,256,995.45 × 20,355,832.80
  4. Step 4: Simplify right side
    72,171,330.30x = 2,203,661,298,810,561
  5. Step 5: Solve for x
    x = 2,203,661,298,810,561/72,171,330.30
  6. Step 6: Final answer
    x = 30,533,749.20

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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.