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Finding the Fourth Proportional to 61,288.98, 91,948.23 and 21,302.16

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Solution

The fourth proportional to 61,288.98, 91,948.23 and 21,302.16 is: 31,958.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,288.98 : 91,948.23 = 21,302.16 : x
  2. Step 2: Convert to fraction form
    61,288.98/91,948.23 = 21,302.16/x
  3. Step 3: Cross multiply
    61,288.98x = 91,948.23 × 21,302.16
  4. Step 4: Simplify right side
    61,288.98x = 1,958,695,907.18
  5. Step 5: Solve for x
    x = 1,958,695,907.18/61,288.98
  6. Step 6: Final answer
    x = 31,958.37

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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.