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Finding the Fourth Proportional to 30,579, 42,199.10 and 17,840.94

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Solution

The fourth proportional to 30,579, 42,199.10 and 17,840.94 is: 24,620.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579 : 42,199.10 = 17,840.94 : x
  2. Step 2: Convert to fraction form
    30,579/42,199.10 = 17,840.94/x
  3. Step 3: Cross multiply
    30,579x = 42,199.10 × 17,840.94
  4. Step 4: Simplify right side
    30,579x = 752,871,521.95
  5. Step 5: Solve for x
    x = 752,871,521.95/30,579
  6. Step 6: Final answer
    x = 24,620.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.