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Finding the Fourth Proportional to 76,350.45, 105,294.63 and 47,672.76

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Solution

The fourth proportional to 76,350.45, 105,294.63 and 47,672.76 is: 65,745.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,350.45 : 105,294.63 = 47,672.76 : x
  2. Step 2: Convert to fraction form
    76,350.45/105,294.63 = 47,672.76/x
  3. Step 3: Cross multiply
    76,350.45x = 105,294.63 × 47,672.76
  4. Step 4: Simplify right side
    76,350.45x = 5,019,685,625.28
  5. Step 5: Solve for x
    x = 5,019,685,625.28/76,350.45
  6. Step 6: Final answer
    x = 65,745.33

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1.5x scale

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.