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Finding the Fourth Proportional to 30,293.65, 45,440.54 and 8,106.99

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Solution

The fourth proportional to 30,293.65, 45,440.54 and 8,106.99 is: 12,160.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,293.65 : 45,440.54 = 8,106.99 : x
  2. Step 2: Convert to fraction form
    30,293.65/45,440.54 = 8,106.99/x
  3. Step 3: Cross multiply
    30,293.65x = 45,440.54 × 8,106.99
  4. Step 4: Simplify right side
    30,293.65x = 368,385,868.44
  5. Step 5: Solve for x
    x = 368,385,868.44/30,293.65
  6. Step 6: Final answer
    x = 12,160.50

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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.