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Finding the Fourth Proportional to 72,629.40, 108,950.38 and 20,038.89

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Solution

The fourth proportional to 72,629.40, 108,950.38 and 20,038.89 is: 30,060.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,629.40 : 108,950.38 = 20,038.89 : x
  2. Step 2: Convert to fraction form
    72,629.40/108,950.38 = 20,038.89/x
  3. Step 3: Cross multiply
    72,629.40x = 108,950.38 × 20,038.89
  4. Step 4: Simplify right side
    72,629.40x = 2,183,244,680.28
  5. Step 5: Solve for x
    x = 2,183,244,680.28/72,629.40
  6. Step 6: Final answer
    x = 30,060.07

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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.