Home / 74,781.65-112,139.73-28,001.72

Finding the Fourth Proportional to 74,781.65, 112,139.73 and 28,001.72

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Solution

The fourth proportional to 74,781.65, 112,139.73 and 28,001.72 is: 41,990.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,781.65 : 112,139.73 = 28,001.72 : x
  2. Step 2: Convert to fraction form
    74,781.65/112,139.73 = 28,001.72/x
  3. Step 3: Cross multiply
    74,781.65x = 112,139.73 × 28,001.72
  4. Step 4: Simplify right side
    74,781.65x = 3,140,104,759.64
  5. Step 5: Solve for x
    x = 3,140,104,759.64/74,781.65
  6. Step 6: Final answer
    x = 41,990.31

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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.