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Finding the Fourth Proportional to 86,483.75, 129,714.87 and 23,308.81

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Solution

The fourth proportional to 86,483.75, 129,714.87 and 23,308.81 is: 34,960.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,483.75 : 129,714.87 = 23,308.81 : x
  2. Step 2: Convert to fraction form
    86,483.75/129,714.87 = 23,308.81/x
  3. Step 3: Cross multiply
    86,483.75x = 129,714.87 × 23,308.81
  4. Step 4: Simplify right side
    86,483.75x = 3,023,498,934.72
  5. Step 5: Solve for x
    x = 3,023,498,934.72/86,483.75
  6. Step 6: Final answer
    x = 34,960.31

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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.