Home / 83,408.19-115,111.55-47,603.55

Finding the Fourth Proportional to 83,408.19, 115,111.55 and 47,603.55

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Solution

The fourth proportional to 83,408.19, 115,111.55 and 47,603.55 is: 65,697.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,408.19 : 115,111.55 = 47,603.55 : x
  2. Step 2: Convert to fraction form
    83,408.19/115,111.55 = 47,603.55/x
  3. Step 3: Cross multiply
    83,408.19x = 115,111.55 × 47,603.55
  4. Step 4: Simplify right side
    83,408.19x = 5,479,718,187.98
  5. Step 5: Solve for x
    x = 5,479,718,187.98/83,408.19
  6. Step 6: Final answer
    x = 65,697.60

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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.