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Finding the Fourth Proportional to 72,461.44, 108,692.22 and 19,871.32

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Solution

The fourth proportional to 72,461.44, 108,692.22 and 19,871.32 is: 29,807.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,461.44 : 108,692.22 = 19,871.32 : x
  2. Step 2: Convert to fraction form
    72,461.44/108,692.22 = 19,871.32/x
  3. Step 3: Cross multiply
    72,461.44x = 108,692.22 × 19,871.32
  4. Step 4: Simplify right side
    72,461.44x = 2,159,857,885.13
  5. Step 5: Solve for x
    x = 2,159,857,885.13/72,461.44
  6. Step 6: Final answer
    x = 29,807.00

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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.