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Finding the Fourth Proportional to 70,625, 105,934.80 and 28,492.04

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Solution

The fourth proportional to 70,625, 105,934.80 and 28,492.04 is: 42,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,625 : 105,934.80 = 28,492.04 : x
  2. Step 2: Convert to fraction form
    70,625/105,934.80 = 28,492.04/x
  3. Step 3: Cross multiply
    70,625x = 105,934.80 × 28,492.04
  4. Step 4: Simplify right side
    70,625x = 3,018,298,558.99
  5. Step 5: Solve for x
    x = 3,018,298,558.99/70,625
  6. Step 6: Final answer
    x = 42,736.97

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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.