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Finding the Fourth Proportional to 86,078.79, 129,125.61 and 23,749.29

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Solution

The fourth proportional to 86,078.79, 129,125.61 and 23,749.29 is: 35,625.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,078.79 : 129,125.61 = 23,749.29 : x
  2. Step 2: Convert to fraction form
    86,078.79/129,125.61 = 23,749.29/x
  3. Step 3: Cross multiply
    86,078.79x = 129,125.61 × 23,749.29
  4. Step 4: Simplify right side
    86,078.79x = 3,066,641,558.32
  5. Step 5: Solve for x
    x = 3,066,641,558.32/86,078.79
  6. Step 6: Final answer
    x = 35,625.98

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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.