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Finding the Fourth Proportional to 86,028.75, 118,720.08 and 48,303

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Solution

The fourth proportional to 86,028.75, 118,720.08 and 48,303 is: 66,658.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,028.75 : 118,720.08 = 48,303 : x
  2. Step 2: Convert to fraction form
    86,028.75/118,720.08 = 48,303/x
  3. Step 3: Cross multiply
    86,028.75x = 118,720.08 × 48,303
  4. Step 4: Simplify right side
    86,028.75x = 5,734,536,024.24
  5. Step 5: Solve for x
    x = 5,734,536,024.24/86,028.75
  6. Step 6: Final answer
    x = 66,658.37

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1.5x scale

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.