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Finding the Fourth Proportional to 93,224.72, 128,698.88 and 72,762.91

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Solution

The fourth proportional to 93,224.72, 128,698.88 and 72,762.91 is: 100,450.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,224.72 : 128,698.88 = 72,762.91 : x
  2. Step 2: Convert to fraction form
    93,224.72/128,698.88 = 72,762.91/x
  3. Step 3: Cross multiply
    93,224.72x = 128,698.88 × 72,762.91
  4. Step 4: Simplify right side
    93,224.72x = 9,364,504,336.98
  5. Step 5: Solve for x
    x = 9,364,504,336.98/93,224.72
  6. Step 6: Final answer
    x = 100,450.87

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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.