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Finding the Fourth Proportional to 50,981.99, 70,366.39 and 28,328.76

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Solution

The fourth proportional to 50,981.99, 70,366.39 and 28,328.76 is: 39,099.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,981.99 : 70,366.39 = 28,328.76 : x
  2. Step 2: Convert to fraction form
    50,981.99/70,366.39 = 28,328.76/x
  3. Step 3: Cross multiply
    50,981.99x = 70,366.39 × 28,328.76
  4. Step 4: Simplify right side
    50,981.99x = 1,993,392,574.38
  5. Step 5: Solve for x
    x = 1,993,392,574.38/50,981.99
  6. Step 6: Final answer
    x = 39,099.94

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Double scale
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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.