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Finding the Fourth Proportional to 86,694.60, 130,015.98 and 45,118.92

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Solution

The fourth proportional to 86,694.60, 130,015.98 and 45,118.92 is: 67,664.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,694.60 : 130,015.98 = 45,118.92 : x
  2. Step 2: Convert to fraction form
    86,694.60/130,015.98 = 45,118.92/x
  3. Step 3: Cross multiply
    86,694.60x = 130,015.98 × 45,118.92
  4. Step 4: Simplify right side
    86,694.60x = 5,866,180,600.34
  5. Step 5: Solve for x
    x = 5,866,180,600.34/86,694.60
  6. Step 6: Final answer
    x = 67,664.89

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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.