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Finding the Fourth Proportional to 76,934.40, 115,401.60 and 72,633.60

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Solution

The fourth proportional to 76,934.40, 115,401.60 and 72,633.60 is: 108,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,934.40 : 115,401.60 = 72,633.60 : x
  2. Step 2: Convert to fraction form
    76,934.40/115,401.60 = 72,633.60/x
  3. Step 3: Cross multiply
    76,934.40x = 115,401.60 × 72,633.60
  4. Step 4: Simplify right side
    76,934.40x = 8,382,033,653.76
  5. Step 5: Solve for x
    x = 8,382,033,653.76/76,934.40
  6. Step 6: Final answer
    x = 108,950.40

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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.