Home / 42,728.96-64,133.64-21,684.11

Finding the Fourth Proportional to 42,728.96, 64,133.64 and 21,684.11

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Solution

The fourth proportional to 42,728.96, 64,133.64 and 21,684.11 is: 32,546.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,728.96 : 64,133.64 = 21,684.11 : x
  2. Step 2: Convert to fraction form
    42,728.96/64,133.64 = 21,684.11/x
  3. Step 3: Cross multiply
    42,728.96x = 64,133.64 × 21,684.11
  4. Step 4: Simplify right side
    42,728.96x = 1,390,680,583.79
  5. Step 5: Solve for x
    x = 1,390,680,583.79/42,728.96
  6. Step 6: Final answer
    x = 32,546.56

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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.