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Finding the Fourth Proportional to 45,690.71, 68,535.39 and 12,411.50

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Solution

The fourth proportional to 45,690.71, 68,535.39 and 12,411.50 is: 18,617.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,690.71 : 68,535.39 = 12,411.50 : x
  2. Step 2: Convert to fraction form
    45,690.71/68,535.39 = 12,411.50/x
  3. Step 3: Cross multiply
    45,690.71x = 68,535.39 × 12,411.50
  4. Step 4: Simplify right side
    45,690.71x = 850,626,992.99
  5. Step 5: Solve for x
    x = 850,626,992.99/45,690.71
  6. Step 6: Final answer
    x = 18,617.07

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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.