Home / 74,890.10-112,367.82-39,788.66

Finding the Fourth Proportional to 74,890.10, 112,367.82 and 39,788.66

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Solution

The fourth proportional to 74,890.10, 112,367.82 and 39,788.66 is: 59,700.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,890.10 : 112,367.82 = 39,788.66 : x
  2. Step 2: Convert to fraction form
    74,890.10/112,367.82 = 39,788.66/x
  3. Step 3: Cross multiply
    74,890.10x = 112,367.82 × 39,788.66
  4. Step 4: Simplify right side
    74,890.10x = 4,470,964,984.92
  5. Step 5: Solve for x
    x = 4,470,964,984.92/74,890.10
  6. Step 6: Final answer
    x = 59,700.35

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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.