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Finding the Fourth Proportional to 76,472.64, 114,710.04 and 20,313.72

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Solution

The fourth proportional to 76,472.64, 114,710.04 and 20,313.72 is: 30,470.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,472.64 : 114,710.04 = 20,313.72 : x
  2. Step 2: Convert to fraction form
    76,472.64/114,710.04 = 20,313.72/x
  3. Step 3: Cross multiply
    76,472.64x = 114,710.04 × 20,313.72
  4. Step 4: Simplify right side
    76,472.64x = 2,330,187,633.75
  5. Step 5: Solve for x
    x = 2,330,187,633.75/76,472.64
  6. Step 6: Final answer
    x = 30,470.87

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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.