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Finding the Fourth Proportional to 61,132.98, 91,713.24 and 21,690.03

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Solution

The fourth proportional to 61,132.98, 91,713.24 and 21,690.03 is: 32,539.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,132.98 : 91,713.24 = 21,690.03 : x
  2. Step 2: Convert to fraction form
    61,132.98/91,713.24 = 21,690.03/x
  3. Step 3: Cross multiply
    61,132.98x = 91,713.24 × 21,690.03
  4. Step 4: Simplify right side
    61,132.98x = 1,989,262,927.00
  5. Step 5: Solve for x
    x = 1,989,262,927.00/61,132.98
  6. Step 6: Final answer
    x = 32,539.93

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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.