Home / 45,445.07-68,114.21-20,455.86

Finding the Fourth Proportional to 45,445.07, 68,114.21 and 20,455.86

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Solution

The fourth proportional to 45,445.07, 68,114.21 and 20,455.86 is: 30,659.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,445.07 : 68,114.21 = 20,455.86 : x
  2. Step 2: Convert to fraction form
    45,445.07/68,114.21 = 20,455.86/x
  3. Step 3: Cross multiply
    45,445.07x = 68,114.21 × 20,455.86
  4. Step 4: Simplify right side
    45,445.07x = 1,393,334,641.49
  5. Step 5: Solve for x
    x = 1,393,334,641.49/45,445.07
  6. Step 6: Final answer
    x = 30,659.76

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1.5x scale

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.