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Finding the Fourth Proportional to 77,333.78, 106,729.17 and 43,347.80

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Solution

The fourth proportional to 77,333.78, 106,729.17 and 43,347.80 is: 59,824.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,333.78 : 106,729.17 = 43,347.80 : x
  2. Step 2: Convert to fraction form
    77,333.78/106,729.17 = 43,347.80/x
  3. Step 3: Cross multiply
    77,333.78x = 106,729.17 × 43,347.80
  4. Step 4: Simplify right side
    77,333.78x = 4,626,474,715.33
  5. Step 5: Solve for x
    x = 4,626,474,715.33/77,333.78
  6. Step 6: Final answer
    x = 59,824.76

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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.