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Finding the Fourth Proportional to 61,202.31, 91,794.83 and 19,643.91

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Solution

The fourth proportional to 61,202.31, 91,794.83 and 19,643.91 is: 29,463.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,202.31 : 91,794.83 = 19,643.91 : x
  2. Step 2: Convert to fraction form
    61,202.31/91,794.83 = 19,643.91/x
  3. Step 3: Cross multiply
    61,202.31x = 91,794.83 × 19,643.91
  4. Step 4: Simplify right side
    61,202.31x = 1,803,209,280.77
  5. Step 5: Solve for x
    x = 1,803,209,280.77/61,202.31
  6. Step 6: Final answer
    x = 29,463.09

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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.