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Finding the Fourth Proportional to 42,321.61, 63,484.44 and 34,912.34

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Solution

The fourth proportional to 42,321.61, 63,484.44 and 34,912.34 is: 52,370.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,321.61 : 63,484.44 = 34,912.34 : x
  2. Step 2: Convert to fraction form
    42,321.61/63,484.44 = 34,912.34/x
  3. Step 3: Cross multiply
    42,321.61x = 63,484.44 × 34,912.34
  4. Step 4: Simplify right side
    42,321.61x = 2,216,390,353.99
  5. Step 5: Solve for x
    x = 2,216,390,353.99/42,321.61
  6. Step 6: Final answer
    x = 52,370.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.