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Finding the Fourth Proportional to 70,490.56, 97,274.10 and 42,179.44

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Solution

The fourth proportional to 70,490.56, 97,274.10 and 42,179.44 is: 58,205.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,490.56 : 97,274.10 = 42,179.44 : x
  2. Step 2: Convert to fraction form
    70,490.56/97,274.10 = 42,179.44/x
  3. Step 3: Cross multiply
    70,490.56x = 97,274.10 × 42,179.44
  4. Step 4: Simplify right side
    70,490.56x = 4,102,967,064.50
  5. Step 5: Solve for x
    x = 4,102,967,064.50/70,490.56
  6. Step 6: Final answer
    x = 58,205.91

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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.