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Finding the Fourth Proportional to 51,485.76, 71,048.88 and 30,263.76

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Solution

The fourth proportional to 51,485.76, 71,048.88 and 30,263.76 is: 41,763.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,485.76 : 71,048.88 = 30,263.76 : x
  2. Step 2: Convert to fraction form
    51,485.76/71,048.88 = 30,263.76/x
  3. Step 3: Cross multiply
    51,485.76x = 71,048.88 × 30,263.76
  4. Step 4: Simplify right side
    51,485.76x = 2,150,206,252.59
  5. Step 5: Solve for x
    x = 2,150,206,252.59/51,485.76
  6. Step 6: Final answer
    x = 41,763.13

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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.