Home / 81,408.48-112,340.41-47,418.04

Finding the Fourth Proportional to 81,408.48, 112,340.41 and 47,418.04

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Solution

The fourth proportional to 81,408.48, 112,340.41 and 47,418.04 is: 65,434.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,408.48 : 112,340.41 = 47,418.04 : x
  2. Step 2: Convert to fraction form
    81,408.48/112,340.41 = 47,418.04/x
  3. Step 3: Cross multiply
    81,408.48x = 112,340.41 × 47,418.04
  4. Step 4: Simplify right side
    81,408.48x = 5,326,962,055.00
  5. Step 5: Solve for x
    x = 5,326,962,055.00/81,408.48
  6. Step 6: Final answer
    x = 65,434.98

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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.