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Finding the Fourth Proportional to 72,150.60, 108,225.90 and 19,558.72

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Solution

The fourth proportional to 72,150.60, 108,225.90 and 19,558.72 is: 29,338.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,150.60 : 108,225.90 = 19,558.72 : x
  2. Step 2: Convert to fraction form
    72,150.60/108,225.90 = 19,558.72/x
  3. Step 3: Cross multiply
    72,150.60x = 108,225.90 × 19,558.72
  4. Step 4: Simplify right side
    72,150.60x = 2,116,760,074.85
  5. Step 5: Solve for x
    x = 2,116,760,074.85/72,150.60
  6. Step 6: Final answer
    x = 29,338.08

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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.