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Finding the Fourth Proportional to 80,999.90, 111,779.94 and 45,189.93

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Solution

The fourth proportional to 80,999.90, 111,779.94 and 45,189.93 is: 62,362.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,999.90 : 111,779.94 = 45,189.93 : x
  2. Step 2: Convert to fraction form
    80,999.90/111,779.94 = 45,189.93/x
  3. Step 3: Cross multiply
    80,999.90x = 111,779.94 × 45,189.93
  4. Step 4: Simplify right side
    80,999.90x = 5,051,326,991.76
  5. Step 5: Solve for x
    x = 5,051,326,991.76/80,999.90
  6. Step 6: Final answer
    x = 62,362.14

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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.