Home / 76,611.20-105,636.28-53,942.94

Finding the Fourth Proportional to 76,611.20, 105,636.28 and 53,942.94

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Solution

The fourth proportional to 76,611.20, 105,636.28 and 53,942.94 is: 74,379.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,611.20 : 105,636.28 = 53,942.94 : x
  2. Step 2: Convert to fraction form
    76,611.20/105,636.28 = 53,942.94/x
  3. Step 3: Cross multiply
    76,611.20x = 105,636.28 × 53,942.94
  4. Step 4: Simplify right side
    76,611.20x = 5,698,331,513.86
  5. Step 5: Solve for x
    x = 5,698,331,513.86/76,611.20
  6. Step 6: Final answer
    x = 74,379.88

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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.