Home / 71,515.72-98,690.44-39,684.08

Finding the Fourth Proportional to 71,515.72, 98,690.44 and 39,684.08

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Solution

The fourth proportional to 71,515.72, 98,690.44 and 39,684.08 is: 54,763.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,515.72 : 98,690.44 = 39,684.08 : x
  2. Step 2: Convert to fraction form
    71,515.72/98,690.44 = 39,684.08/x
  3. Step 3: Cross multiply
    71,515.72x = 98,690.44 × 39,684.08
  4. Step 4: Simplify right side
    71,515.72x = 3,916,439,316.20
  5. Step 5: Solve for x
    x = 3,916,439,316.20/71,515.72
  6. Step 6: Final answer
    x = 54,763.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.