Home / 48,478.42-72,709.39-13,409.88

Finding the Fourth Proportional to 48,478.42, 72,709.39 and 13,409.88

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Solution

The fourth proportional to 48,478.42, 72,709.39 and 13,409.88 is: 20,112.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,478.42 : 72,709.39 = 13,409.88 : x
  2. Step 2: Convert to fraction form
    48,478.42/72,709.39 = 13,409.88/x
  3. Step 3: Cross multiply
    48,478.42x = 72,709.39 × 13,409.88
  4. Step 4: Simplify right side
    48,478.42x = 975,024,194.77
  5. Step 5: Solve for x
    x = 975,024,194.77/48,478.42
  6. Step 6: Final answer
    x = 20,112.54

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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.