Home / 45,973.96-68,905.20-20,979.76

Finding the Fourth Proportional to 45,973.96, 68,905.20 and 20,979.76

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Solution

The fourth proportional to 45,973.96, 68,905.20 and 20,979.76 is: 31,444.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,973.96 : 68,905.20 = 20,979.76 : x
  2. Step 2: Convert to fraction form
    45,973.96/68,905.20 = 20,979.76/x
  3. Step 3: Cross multiply
    45,973.96x = 68,905.20 × 20,979.76
  4. Step 4: Simplify right side
    45,973.96x = 1,445,614,558.75
  5. Step 5: Solve for x
    x = 1,445,614,558.75/45,973.96
  6. Step 6: Final answer
    x = 31,444.20

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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.