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Finding the Fourth Proportional to 80,768, 111,447.08 and 46,779.69

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Solution

The fourth proportional to 80,768, 111,447.08 and 46,779.69 is: 64,548.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,768 : 111,447.08 = 46,779.69 : x
  2. Step 2: Convert to fraction form
    80,768/111,447.08 = 46,779.69/x
  3. Step 3: Cross multiply
    80,768x = 111,447.08 × 46,779.69
  4. Step 4: Simplify right side
    80,768x = 5,213,459,853.81
  5. Step 5: Solve for x
    x = 5,213,459,853.81/80,768
  6. Step 6: Final answer
    x = 64,548.58

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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.