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Finding the Fourth Proportional to 62,270, 93,405.82 and 20,717

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Solution

The fourth proportional to 62,270, 93,405.82 and 20,717 is: 31,075.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,270 : 93,405.82 = 20,717 : x
  2. Step 2: Convert to fraction form
    62,270/93,405.82 = 20,717/x
  3. Step 3: Cross multiply
    62,270x = 93,405.82 × 20,717
  4. Step 4: Simplify right side
    62,270x = 1,935,088,372.94
  5. Step 5: Solve for x
    x = 1,935,088,372.94/62,270
  6. Step 6: Final answer
    x = 31,075.77

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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.