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Finding the Fourth Proportional to 70,713.33, 106,139.70 and 51,940.67

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Solution

The fourth proportional to 70,713.33, 106,139.70 and 51,940.67 is: 77,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,713.33 : 106,139.70 = 51,940.67 : x
  2. Step 2: Convert to fraction form
    70,713.33/106,139.70 = 51,940.67/x
  3. Step 3: Cross multiply
    70,713.33x = 106,139.70 × 51,940.67
  4. Step 4: Simplify right side
    70,713.33x = 5,512,966,600.90
  5. Step 5: Solve for x
    x = 5,512,966,600.90/70,713.33
  6. Step 6: Final answer
    x = 77,962.20

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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.