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Finding the Fourth Proportional to 86,583.60, 130,069.80 and 84,250.80

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Solution

The fourth proportional to 86,583.60, 130,069.80 and 84,250.80 is: 126,565.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,583.60 : 130,069.80 = 84,250.80 : x
  2. Step 2: Convert to fraction form
    86,583.60/130,069.80 = 84,250.80/x
  3. Step 3: Cross multiply
    86,583.60x = 130,069.80 × 84,250.80
  4. Step 4: Simplify right side
    86,583.60x = 10,958,484,705.84
  5. Step 5: Solve for x
    x = 10,958,484,705.84/86,583.60
  6. Step 6: Final answer
    x = 126,565.36

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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.