Home / 76,531.82-105,630.60-42,551.90

Finding the Fourth Proportional to 76,531.82, 105,630.60 and 42,551.90

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Solution

The fourth proportional to 76,531.82, 105,630.60 and 42,551.90 is: 58,730.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,531.82 : 105,630.60 = 42,551.90 : x
  2. Step 2: Convert to fraction form
    76,531.82/105,630.60 = 42,551.90/x
  3. Step 3: Cross multiply
    76,531.82x = 105,630.60 × 42,551.90
  4. Step 4: Simplify right side
    76,531.82x = 4,494,782,728.14
  5. Step 5: Solve for x
    x = 4,494,782,728.14/76,531.82
  6. Step 6: Final answer
    x = 58,730.90

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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.