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Finding the Fourth Proportional to 28,088, 42,134.44 and 7,311.52

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Solution

The fourth proportional to 28,088, 42,134.44 and 7,311.52 is: 10,967.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088 : 42,134.44 = 7,311.52 : x
  2. Step 2: Convert to fraction form
    28,088/42,134.44 = 7,311.52/x
  3. Step 3: Cross multiply
    28,088x = 42,134.44 × 7,311.52
  4. Step 4: Simplify right side
    28,088x = 308,066,800.75
  5. Step 5: Solve for x
    x = 308,066,800.75/28,088
  6. Step 6: Final answer
    x = 10,967.92

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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.