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Finding the Fourth Proportional to 70,942.05, 97,866.63 and 42,245.37

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Solution

The fourth proportional to 70,942.05, 97,866.63 and 42,245.37 is: 58,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,942.05 : 97,866.63 = 42,245.37 : x
  2. Step 2: Convert to fraction form
    70,942.05/97,866.63 = 42,245.37/x
  3. Step 3: Cross multiply
    70,942.05x = 97,866.63 × 42,245.37
  4. Step 4: Simplify right side
    70,942.05x = 4,134,411,995.00
  5. Step 5: Solve for x
    x = 4,134,411,995.00/70,942.05
  6. Step 6: Final answer
    x = 58,278.72

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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.