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Finding the Fourth Proportional to 45,497.87, 68,492.47 and 40,920.38

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Solution

The fourth proportional to 45,497.87, 68,492.47 and 40,920.38 is: 61,601.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,497.87 : 68,492.47 = 40,920.38 : x
  2. Step 2: Convert to fraction form
    45,497.87/68,492.47 = 40,920.38/x
  3. Step 3: Cross multiply
    45,497.87x = 68,492.47 × 40,920.38
  4. Step 4: Simplify right side
    45,497.87x = 2,802,737,899.54
  5. Step 5: Solve for x
    x = 2,802,737,899.54/45,497.87
  6. Step 6: Final answer
    x = 61,601.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.