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Finding the Fourth Proportional to 86,871.70, 130,295.40 and 27,713.35

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Solution

The fourth proportional to 86,871.70, 130,295.40 and 27,713.35 is: 41,566.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,871.70 : 130,295.40 = 27,713.35 : x
  2. Step 2: Convert to fraction form
    86,871.70/130,295.40 = 27,713.35/x
  3. Step 3: Cross multiply
    86,871.70x = 130,295.40 × 27,713.35
  4. Step 4: Simplify right side
    86,871.70x = 3,610,922,023.59
  5. Step 5: Solve for x
    x = 3,610,922,023.59/86,871.70
  6. Step 6: Final answer
    x = 41,566.15

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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.