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Finding the Fourth Proportional to 69,615, 96,068.70 and 39,812.76

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Solution

The fourth proportional to 69,615, 96,068.70 and 39,812.76 is: 54,941.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,615 : 96,068.70 = 39,812.76 : x
  2. Step 2: Convert to fraction form
    69,615/96,068.70 = 39,812.76/x
  3. Step 3: Cross multiply
    69,615x = 96,068.70 × 39,812.76
  4. Step 4: Simplify right side
    69,615x = 3,824,760,096.61
  5. Step 5: Solve for x
    x = 3,824,760,096.61/69,615
  6. Step 6: Final answer
    x = 54,941.61

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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.