Home / 76,512.33-105,582.47-42,977.61

Finding the Fourth Proportional to 76,512.33, 105,582.47 and 42,977.61

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Solution

The fourth proportional to 76,512.33, 105,582.47 and 42,977.61 is: 59,306.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,512.33 : 105,582.47 = 42,977.61 : x
  2. Step 2: Convert to fraction form
    76,512.33/105,582.47 = 42,977.61/x
  3. Step 3: Cross multiply
    76,512.33x = 105,582.47 × 42,977.61
  4. Step 4: Simplify right side
    76,512.33x = 4,537,682,003.61
  5. Step 5: Solve for x
    x = 4,537,682,003.61/76,512.33
  6. Step 6: Final answer
    x = 59,306.55

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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.