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Finding the Fourth Proportional to 86,078.66, 129,125.44 and 23,749.16

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Solution

The fourth proportional to 86,078.66, 129,125.44 and 23,749.16 is: 35,625.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,078.66 : 129,125.44 = 23,749.16 : x
  2. Step 2: Convert to fraction form
    86,078.66/129,125.44 = 23,749.16/x
  3. Step 3: Cross multiply
    86,078.66x = 129,125.44 × 23,749.16
  4. Step 4: Simplify right side
    86,078.66x = 3,066,620,734.63
  5. Step 5: Solve for x
    x = 3,066,620,734.63/86,078.66
  6. Step 6: Final answer
    x = 35,625.80

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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.