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Finding the Fourth Proportional to 86,590.70, 130,005.39 and 59,871.03

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Solution

The fourth proportional to 86,590.70, 130,005.39 and 59,871.03 is: 89,889.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,590.70 : 130,005.39 = 59,871.03 : x
  2. Step 2: Convert to fraction form
    86,590.70/130,005.39 = 59,871.03/x
  3. Step 3: Cross multiply
    86,590.70x = 130,005.39 × 59,871.03
  4. Step 4: Simplify right side
    86,590.70x = 7,783,556,604.85
  5. Step 5: Solve for x
    x = 7,783,556,604.85/86,590.70
  6. Step 6: Final answer
    x = 89,889.06

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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.