Home / 57,040.31-78,736.47-34,380.11

Finding the Fourth Proportional to 57,040.31, 78,736.47 and 34,380.11

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Solution

The fourth proportional to 57,040.31, 78,736.47 and 34,380.11 is: 47,457.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,040.31 : 78,736.47 = 34,380.11 : x
  2. Step 2: Convert to fraction form
    57,040.31/78,736.47 = 34,380.11/x
  3. Step 3: Cross multiply
    57,040.31x = 78,736.47 × 34,380.11
  4. Step 4: Simplify right side
    57,040.31x = 2,706,968,499.61
  5. Step 5: Solve for x
    x = 2,706,968,499.61/57,040.31
  6. Step 6: Final answer
    x = 47,457.11

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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.