Home / 66,268.98-99,369.41-19,515.78

Finding the Fourth Proportional to 66,268.98, 99,369.41 and 19,515.78

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Solution

The fourth proportional to 66,268.98, 99,369.41 and 19,515.78 is: 29,263.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,268.98 : 99,369.41 = 19,515.78 : x
  2. Step 2: Convert to fraction form
    66,268.98/99,369.41 = 19,515.78/x
  3. Step 3: Cross multiply
    66,268.98x = 99,369.41 × 19,515.78
  4. Step 4: Simplify right side
    66,268.98x = 1,939,271,544.29
  5. Step 5: Solve for x
    x = 1,939,271,544.29/66,268.98
  6. Step 6: Final answer
    x = 29,263.64

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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.