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Finding the Fourth Proportional to 58,286, 80,390.94 and 40,410.92

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Solution

The fourth proportional to 58,286, 80,390.94 and 40,410.92 is: 55,736.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,286 : 80,390.94 = 40,410.92 : x
  2. Step 2: Convert to fraction form
    58,286/80,390.94 = 40,410.92/x
  3. Step 3: Cross multiply
    58,286x = 80,390.94 × 40,410.92
  4. Step 4: Simplify right side
    58,286x = 3,248,671,845.06
  5. Step 5: Solve for x
    x = 3,248,671,845.06/58,286
  6. Step 6: Final answer
    x = 55,736.74

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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.