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Finding the Fourth Proportional to 55,907.70, 77,126.94 and 49,540.74

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Solution

The fourth proportional to 55,907.70, 77,126.94 and 49,540.74 is: 68,343.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,907.70 : 77,126.94 = 49,540.74 : x
  2. Step 2: Convert to fraction form
    55,907.70/77,126.94 = 49,540.74/x
  3. Step 3: Cross multiply
    55,907.70x = 77,126.94 × 49,540.74
  4. Step 4: Simplify right side
    55,907.70x = 3,820,925,681.54
  5. Step 5: Solve for x
    x = 3,820,925,681.54/55,907.70
  6. Step 6: Final answer
    x = 68,343.46

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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.