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Finding the Fourth Proportional to 28,051.35, 42,077.02 and 8,330.07

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Solution

The fourth proportional to 28,051.35, 42,077.02 and 8,330.07 is: 12,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051.35 : 42,077.02 = 8,330.07 : x
  2. Step 2: Convert to fraction form
    28,051.35/42,077.02 = 8,330.07/x
  3. Step 3: Cross multiply
    28,051.35x = 42,077.02 × 8,330.07
  4. Step 4: Simplify right side
    28,051.35x = 350,504,521.99
  5. Step 5: Solve for x
    x = 350,504,521.99/28,051.35
  6. Step 6: Final answer
    x = 12,495.10

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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.