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Finding the Fourth Proportional to 61,173.78, 84,427.22 and 34,311.21

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Solution

The fourth proportional to 61,173.78, 84,427.22 and 34,311.21 is: 47,353.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,173.78 : 84,427.22 = 34,311.21 : x
  2. Step 2: Convert to fraction form
    61,173.78/84,427.22 = 34,311.21/x
  3. Step 3: Cross multiply
    61,173.78x = 84,427.22 × 34,311.21
  4. Step 4: Simplify right side
    61,173.78x = 2,896,800,075.14
  5. Step 5: Solve for x
    x = 2,896,800,075.14/61,173.78
  6. Step 6: Final answer
    x = 47,353.62

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1.5x scale

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.