Home / 77,745.12-116,465.34-40,329.80

Finding the Fourth Proportional to 77,745.12, 116,465.34 and 40,329.80

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Solution

The fourth proportional to 77,745.12, 116,465.34 and 40,329.80 is: 60,415.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,745.12 : 116,465.34 = 40,329.80 : x
  2. Step 2: Convert to fraction form
    77,745.12/116,465.34 = 40,329.80/x
  3. Step 3: Cross multiply
    77,745.12x = 116,465.34 × 40,329.80
  4. Step 4: Simplify right side
    77,745.12x = 4,697,023,874.79
  5. Step 5: Solve for x
    x = 4,697,023,874.79/77,745.12
  6. Step 6: Final answer
    x = 60,415.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.