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Finding the Fourth Proportional to 30,287.40, 45,344.70 and 26,831.40

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Solution

The fourth proportional to 30,287.40, 45,344.70 and 26,831.40 is: 40,170.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.40 : 45,344.70 = 26,831.40 : x
  2. Step 2: Convert to fraction form
    30,287.40/45,344.70 = 26,831.40/x
  3. Step 3: Cross multiply
    30,287.40x = 45,344.70 × 26,831.40
  4. Step 4: Simplify right side
    30,287.40x = 1,216,661,783.58
  5. Step 5: Solve for x
    x = 1,216,661,783.58/30,287.40
  6. Step 6: Final answer
    x = 40,170.56

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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.