Home / 74,217.63-102,409.20-42,379.77

Finding the Fourth Proportional to 74,217.63, 102,409.20 and 42,379.77

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Solution

The fourth proportional to 74,217.63, 102,409.20 and 42,379.77 is: 58,477.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,217.63 : 102,409.20 = 42,379.77 : x
  2. Step 2: Convert to fraction form
    74,217.63/102,409.20 = 42,379.77/x
  3. Step 3: Cross multiply
    74,217.63x = 102,409.20 × 42,379.77
  4. Step 4: Simplify right side
    74,217.63x = 4,340,078,341.88
  5. Step 5: Solve for x
    x = 4,340,078,341.88/74,217.63
  6. Step 6: Final answer
    x = 58,477.73

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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.