Home / 74,556.15-102,890.31-42,731.19

Finding the Fourth Proportional to 74,556.15, 102,890.31 and 42,731.19

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Solution

The fourth proportional to 74,556.15, 102,890.31 and 42,731.19 is: 58,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,556.15 : 102,890.31 = 42,731.19 : x
  2. Step 2: Convert to fraction form
    74,556.15/102,890.31 = 42,731.19/x
  3. Step 3: Cross multiply
    74,556.15x = 102,890.31 × 42,731.19
  4. Step 4: Simplify right side
    74,556.15x = 4,396,625,385.77
  5. Step 5: Solve for x
    x = 4,396,625,385.77/74,556.15
  6. Step 6: Final answer
    x = 58,970.66

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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.