Home / 69,431.55-104,152.77-19,515.75

Finding the Fourth Proportional to 69,431.55, 104,152.77 and 19,515.75

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Solution

The fourth proportional to 69,431.55, 104,152.77 and 19,515.75 is: 29,275.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,431.55 : 104,152.77 = 19,515.75 : x
  2. Step 2: Convert to fraction form
    69,431.55/104,152.77 = 19,515.75/x
  3. Step 3: Cross multiply
    69,431.55x = 104,152.77 × 19,515.75
  4. Step 4: Simplify right side
    69,431.55x = 2,032,619,421.13
  5. Step 5: Solve for x
    x = 2,032,619,421.13/69,431.55
  6. Step 6: Final answer
    x = 29,275.16

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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.