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Finding the Fourth Proportional to 74,287.86, 111,432.02 and 18,883.86

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Solution

The fourth proportional to 74,287.86, 111,432.02 and 18,883.86 is: 28,325.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,287.86 : 111,432.02 = 18,883.86 : x
  2. Step 2: Convert to fraction form
    74,287.86/111,432.02 = 18,883.86/x
  3. Step 3: Cross multiply
    74,287.86x = 111,432.02 × 18,883.86
  4. Step 4: Simplify right side
    74,287.86x = 2,104,266,665.20
  5. Step 5: Solve for x
    x = 2,104,266,665.20/74,287.86
  6. Step 6: Final answer
    x = 28,325.85

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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.