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Finding the Fourth Proportional to 79,779.87, 119,630.32 and 46,508.31

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Solution

The fourth proportional to 79,779.87, 119,630.32 and 46,508.31 is: 69,739.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,779.87 : 119,630.32 = 46,508.31 : x
  2. Step 2: Convert to fraction form
    79,779.87/119,630.32 = 46,508.31/x
  3. Step 3: Cross multiply
    79,779.87x = 119,630.32 × 46,508.31
  4. Step 4: Simplify right side
    79,779.87x = 5,563,803,891.69
  5. Step 5: Solve for x
    x = 5,563,803,891.69/79,779.87
  6. Step 6: Final answer
    x = 69,739.45

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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.