Home / 80,828.64-121,213.80-34,056

Finding the Fourth Proportional to 80,828.64, 121,213.80 and 34,056

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Solution

The fourth proportional to 80,828.64, 121,213.80 and 34,056 is: 51,071.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,828.64 : 121,213.80 = 34,056 : x
  2. Step 2: Convert to fraction form
    80,828.64/121,213.80 = 34,056/x
  3. Step 3: Cross multiply
    80,828.64x = 121,213.80 × 34,056
  4. Step 4: Simplify right side
    80,828.64x = 4,128,057,172.80
  5. Step 5: Solve for x
    x = 4,128,057,172.80/80,828.64
  6. Step 6: Final answer
    x = 51,071.71

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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.