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Finding the Fourth Proportional to 51,044.70, 70,443.20 and 30,905.26

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Solution

The fourth proportional to 51,044.70, 70,443.20 and 30,905.26 is: 42,650.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,044.70 : 70,443.20 = 30,905.26 : x
  2. Step 2: Convert to fraction form
    51,044.70/70,443.20 = 30,905.26/x
  3. Step 3: Cross multiply
    51,044.70x = 70,443.20 × 30,905.26
  4. Step 4: Simplify right side
    51,044.70x = 2,177,065,411.23
  5. Step 5: Solve for x
    x = 2,177,065,411.23/51,044.70
  6. Step 6: Final answer
    x = 42,650.18

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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.