Home / 48,278.86-72,438.21-21,247.34

Finding the Fourth Proportional to 48,278.86, 72,438.21 and 21,247.34

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Solution

The fourth proportional to 48,278.86, 72,438.21 and 21,247.34 is: 31,879.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,278.86 : 72,438.21 = 21,247.34 : x
  2. Step 2: Convert to fraction form
    48,278.86/72,438.21 = 21,247.34/x
  3. Step 3: Cross multiply
    48,278.86x = 72,438.21 × 21,247.34
  4. Step 4: Simplify right side
    48,278.86x = 1,539,118,914.67
  5. Step 5: Solve for x
    x = 1,539,118,914.67/48,278.86
  6. Step 6: Final answer
    x = 31,879.77

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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.