Home / 45,820.48-68,722.60-20,854.72

Finding the Fourth Proportional to 45,820.48, 68,722.60 and 20,854.72

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Solution

The fourth proportional to 45,820.48, 68,722.60 and 20,854.72 is: 31,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,820.48 : 68,722.60 = 20,854.72 : x
  2. Step 2: Convert to fraction form
    45,820.48/68,722.60 = 20,854.72/x
  3. Step 3: Cross multiply
    45,820.48x = 68,722.60 × 20,854.72
  4. Step 4: Simplify right side
    45,820.48x = 1,433,190,580.67
  5. Step 5: Solve for x
    x = 1,433,190,580.67/45,820.48
  6. Step 6: Final answer
    x = 31,278.38

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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.