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Finding the Fourth Proportional to 81,779.44, 112,866.08 and 49,941.64

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Solution

The fourth proportional to 81,779.44, 112,866.08 and 49,941.64 is: 68,925.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,779.44 : 112,866.08 = 49,941.64 : x
  2. Step 2: Convert to fraction form
    81,779.44/112,866.08 = 49,941.64/x
  3. Step 3: Cross multiply
    81,779.44x = 112,866.08 × 49,941.64
  4. Step 4: Simplify right side
    81,779.44x = 5,636,717,135.57
  5. Step 5: Solve for x
    x = 5,636,717,135.57/81,779.44
  6. Step 6: Final answer
    x = 68,925.85

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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.