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Finding the Fourth Proportional to 79,179.84, 109,271.43 and 43,372.98

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Solution

The fourth proportional to 79,179.84, 109,271.43 and 43,372.98 is: 59,856.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,179.84 : 109,271.43 = 43,372.98 : x
  2. Step 2: Convert to fraction form
    79,179.84/109,271.43 = 43,372.98/x
  3. Step 3: Cross multiply
    79,179.84x = 109,271.43 × 43,372.98
  4. Step 4: Simplify right side
    79,179.84x = 4,739,427,547.96
  5. Step 5: Solve for x
    x = 4,739,427,547.96/79,179.84
  6. Step 6: Final answer
    x = 59,856.49

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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.