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Finding the Fourth Proportional to 86,717.40, 130,023.30 and 34,063.80

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Solution

The fourth proportional to 86,717.40, 130,023.30 and 34,063.80 is: 51,074.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,717.40 : 130,023.30 = 34,063.80 : x
  2. Step 2: Convert to fraction form
    86,717.40/130,023.30 = 34,063.80/x
  3. Step 3: Cross multiply
    86,717.40x = 130,023.30 × 34,063.80
  4. Step 4: Simplify right side
    86,717.40x = 4,429,087,686.54
  5. Step 5: Solve for x
    x = 4,429,087,686.54/86,717.40
  6. Step 6: Final answer
    x = 51,074.96

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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.