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Finding the Fourth Proportional to 45,812.80, 68,740.80 and 34,148.80

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Solution

The fourth proportional to 45,812.80, 68,740.80 and 34,148.80 is: 51,239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,812.80 : 68,740.80 = 34,148.80 : x
  2. Step 2: Convert to fraction form
    45,812.80/68,740.80 = 34,148.80/x
  3. Step 3: Cross multiply
    45,812.80x = 68,740.80 × 34,148.80
  4. Step 4: Simplify right side
    45,812.80x = 2,347,415,831.04
  5. Step 5: Solve for x
    x = 2,347,415,831.04/45,812.80
  6. Step 6: Final answer
    x = 51,239.30

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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.