Home / 48,621.31-72,890.37-18,657.05

Finding the Fourth Proportional to 48,621.31, 72,890.37 and 18,657.05

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Solution

The fourth proportional to 48,621.31, 72,890.37 and 18,657.05 is: 27,969.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,621.31 : 72,890.37 = 18,657.05 : x
  2. Step 2: Convert to fraction form
    48,621.31/72,890.37 = 18,657.05/x
  3. Step 3: Cross multiply
    48,621.31x = 72,890.37 × 18,657.05
  4. Step 4: Simplify right side
    48,621.31x = 1,359,919,683.14
  5. Step 5: Solve for x
    x = 1,359,919,683.14/48,621.31
  6. Step 6: Final answer
    x = 27,969.62

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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.