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Finding the Fourth Proportional to 74,484.86, 111,728.50 and 18,325.12

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Solution

The fourth proportional to 74,484.86, 111,728.50 and 18,325.12 is: 27,487.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,484.86 : 111,728.50 = 18,325.12 : x
  2. Step 2: Convert to fraction form
    74,484.86/111,728.50 = 18,325.12/x
  3. Step 3: Cross multiply
    74,484.86x = 111,728.50 × 18,325.12
  4. Step 4: Simplify right side
    74,484.86x = 2,047,438,169.92
  5. Step 5: Solve for x
    x = 2,047,438,169.92/74,484.86
  6. Step 6: Final answer
    x = 27,487.98

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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.