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Finding the Fourth Proportional to 61,069.90, 91,617.93 and 18,949.08

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Solution

The fourth proportional to 61,069.90, 91,617.93 and 18,949.08 is: 28,427.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,069.90 : 91,617.93 = 18,949.08 : x
  2. Step 2: Convert to fraction form
    61,069.90/91,617.93 = 18,949.08/x
  3. Step 3: Cross multiply
    61,069.90x = 91,617.93 × 18,949.08
  4. Step 4: Simplify right side
    61,069.90x = 1,736,075,485.00
  5. Step 5: Solve for x
    x = 1,736,075,485.00/61,069.90
  6. Step 6: Final answer
    x = 28,427.68

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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.