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Finding the Fourth Proportional to 86,847.93, 130,272.84 and 30,648.54

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Solution

The fourth proportional to 86,847.93, 130,272.84 and 30,648.54 is: 45,973.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,847.93 : 130,272.84 = 30,648.54 : x
  2. Step 2: Convert to fraction form
    86,847.93/130,272.84 = 30,648.54/x
  3. Step 3: Cross multiply
    86,847.93x = 130,272.84 × 30,648.54
  4. Step 4: Simplify right side
    86,847.93x = 3,992,672,347.65
  5. Step 5: Solve for x
    x = 3,992,672,347.65/86,847.93
  6. Step 6: Final answer
    x = 45,973.14

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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.