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Finding the Fourth Proportional to 51,237, 70,707.06 and 28,881

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Solution

The fourth proportional to 51,237, 70,707.06 and 28,881 is: 39,855.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,237 : 70,707.06 = 28,881 : x
  2. Step 2: Convert to fraction form
    51,237/70,707.06 = 28,881/x
  3. Step 3: Cross multiply
    51,237x = 70,707.06 × 28,881
  4. Step 4: Simplify right side
    51,237x = 2,042,090,599.86
  5. Step 5: Solve for x
    x = 2,042,090,599.86/51,237
  6. Step 6: Final answer
    x = 39,855.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.