Home / 40,811.31-56,339.54-31,715.21

Finding the Fourth Proportional to 40,811.31, 56,339.54 and 31,715.21

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Solution

The fourth proportional to 40,811.31, 56,339.54 and 31,715.21 is: 43,782.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,811.31 : 56,339.54 = 31,715.21 : x
  2. Step 2: Convert to fraction form
    40,811.31/56,339.54 = 31,715.21/x
  3. Step 3: Cross multiply
    40,811.31x = 56,339.54 × 31,715.21
  4. Step 4: Simplify right side
    40,811.31x = 1,786,820,342.40
  5. Step 5: Solve for x
    x = 1,786,820,342.40/40,811.31
  6. Step 6: Final answer
    x = 43,782.48

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