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Finding the Fourth Proportional to 76,039.74, 114,079.05 and 31,651.74

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Solution

The fourth proportional to 76,039.74, 114,079.05 and 31,651.74 is: 47,485.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,039.74 : 114,079.05 = 31,651.74 : x
  2. Step 2: Convert to fraction form
    76,039.74/114,079.05 = 31,651.74/x
  3. Step 3: Cross multiply
    76,039.74x = 114,079.05 × 31,651.74
  4. Step 4: Simplify right side
    76,039.74x = 3,610,800,430.05
  5. Step 5: Solve for x
    x = 3,610,800,430.05/76,039.74
  6. Step 6: Final answer
    x = 47,485.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.