Home / 86,724.20-129,989.10-36,795.80

Finding the Fourth Proportional to 86,724.20, 129,989.10 and 36,795.80

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Solution

The fourth proportional to 86,724.20, 129,989.10 and 36,795.80 is: 55,152.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,724.20 : 129,989.10 = 36,795.80 : x
  2. Step 2: Convert to fraction form
    86,724.20/129,989.10 = 36,795.80/x
  3. Step 3: Cross multiply
    86,724.20x = 129,989.10 × 36,795.80
  4. Step 4: Simplify right side
    86,724.20x = 4,783,052,925.78
  5. Step 5: Solve for x
    x = 4,783,052,925.78/86,724.20
  6. Step 6: Final answer
    x = 55,152.46

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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.