Home / 68,274.81-94,312.31-57,777.21

Finding the Fourth Proportional to 68,274.81, 94,312.31 and 57,777.21

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Solution

The fourth proportional to 68,274.81, 94,312.31 and 57,777.21 is: 79,811.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,274.81 : 94,312.31 = 57,777.21 : x
  2. Step 2: Convert to fraction form
    68,274.81/94,312.31 = 57,777.21/x
  3. Step 3: Cross multiply
    68,274.81x = 94,312.31 × 57,777.21
  4. Step 4: Simplify right side
    68,274.81x = 5,449,101,851.57
  5. Step 5: Solve for x
    x = 5,449,101,851.57/68,274.81
  6. Step 6: Final answer
    x = 79,811.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.