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Finding the Fourth Proportional to 291,751.80, 437,637.42 and 81,372.12

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Solution

The fourth proportional to 291,751.80, 437,637.42 and 81,372.12 is: 122,060.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,751.80 : 437,637.42 = 81,372.12 : x
  2. Step 2: Convert to fraction form
    291,751.80/437,637.42 = 81,372.12/x
  3. Step 3: Cross multiply
    291,751.80x = 437,637.42 × 81,372.12
  4. Step 4: Simplify right side
    291,751.80x = 35,611,484,656.73
  5. Step 5: Solve for x
    x = 35,611,484,656.73/291,751.80
  6. Step 6: Final answer
    x = 122,060.89

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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.