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Finding the Fourth Proportional to 81,544.66, 112,483.84 and 51,281.98

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Solution

The fourth proportional to 81,544.66, 112,483.84 and 51,281.98 is: 70,739.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,544.66 : 112,483.84 = 51,281.98 : x
  2. Step 2: Convert to fraction form
    81,544.66/112,483.84 = 51,281.98/x
  3. Step 3: Cross multiply
    81,544.66x = 112,483.84 × 51,281.98
  4. Step 4: Simplify right side
    81,544.66x = 5,768,394,033.20
  5. Step 5: Solve for x
    x = 5,768,394,033.20/81,544.66
  6. Step 6: Final answer
    x = 70,739.08

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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.