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Finding the Fourth Proportional to 72,032.68, 108,048.54 and 18,724.84

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Solution

The fourth proportional to 72,032.68, 108,048.54 and 18,724.84 is: 28,087.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,032.68 : 108,048.54 = 18,724.84 : x
  2. Step 2: Convert to fraction form
    72,032.68/108,048.54 = 18,724.84/x
  3. Step 3: Cross multiply
    72,032.68x = 108,048.54 × 18,724.84
  4. Step 4: Simplify right side
    72,032.68x = 2,023,191,623.73
  5. Step 5: Solve for x
    x = 2,023,191,623.73/72,032.68
  6. Step 6: Final answer
    x = 28,087.14

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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.