Home / 76,550.20-105,644.05-42,558.95

Finding the Fourth Proportional to 76,550.20, 105,644.05 and 42,558.95

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Solution

The fourth proportional to 76,550.20, 105,644.05 and 42,558.95 is: 58,734.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,550.20 : 105,644.05 = 42,558.95 : x
  2. Step 2: Convert to fraction form
    76,550.20/105,644.05 = 42,558.95/x
  3. Step 3: Cross multiply
    76,550.20x = 105,644.05 × 42,558.95
  4. Step 4: Simplify right side
    76,550.20x = 4,496,099,999.46
  5. Step 5: Solve for x
    x = 4,496,099,999.46/76,550.20
  6. Step 6: Final answer
    x = 58,734.01

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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.