Home / 45,818.48-68,719.60-20,852.72

Finding the Fourth Proportional to 45,818.48, 68,719.60 and 20,852.72

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Solution

The fourth proportional to 45,818.48, 68,719.60 and 20,852.72 is: 31,275.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,818.48 : 68,719.60 = 20,852.72 : x
  2. Step 2: Convert to fraction form
    45,818.48/68,719.60 = 20,852.72/x
  3. Step 3: Cross multiply
    45,818.48x = 68,719.60 × 20,852.72
  4. Step 4: Simplify right side
    45,818.48x = 1,432,990,577.31
  5. Step 5: Solve for x
    x = 1,432,990,577.31/45,818.48
  6. Step 6: Final answer
    x = 31,275.38

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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.