Home / 81,408.40-112,341.92-45,106.32

Finding the Fourth Proportional to 81,408.40, 112,341.92 and 45,106.32

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Solution

The fourth proportional to 81,408.40, 112,341.92 and 45,106.32 is: 62,245.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,408.40 : 112,341.92 = 45,106.32 : x
  2. Step 2: Convert to fraction form
    81,408.40/112,341.92 = 45,106.32/x
  3. Step 3: Cross multiply
    81,408.40x = 112,341.92 × 45,106.32
  4. Step 4: Simplify right side
    81,408.40x = 5,067,330,592.93
  5. Step 5: Solve for x
    x = 5,067,330,592.93/81,408.40
  6. Step 6: Final answer
    x = 62,245.80

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1.5x scale

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.