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Finding the Fourth Proportional to 74,896.61, 103,358.12 and 40,906.08

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Solution

The fourth proportional to 74,896.61, 103,358.12 and 40,906.08 is: 56,450.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,896.61 : 103,358.12 = 40,906.08 : x
  2. Step 2: Convert to fraction form
    74,896.61/103,358.12 = 40,906.08/x
  3. Step 3: Cross multiply
    74,896.61x = 103,358.12 × 40,906.08
  4. Step 4: Simplify right side
    74,896.61x = 4,227,975,320.84
  5. Step 5: Solve for x
    x = 4,227,975,320.84/74,896.61
  6. Step 6: Final answer
    x = 56,450.83

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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.