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Finding the Fourth Proportional to 51,738.86, 77,662.58 and 45,853.40

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Solution

The fourth proportional to 51,738.86, 77,662.58 and 45,853.40 is: 68,828.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,738.86 : 77,662.58 = 45,853.40 : x
  2. Step 2: Convert to fraction form
    51,738.86/77,662.58 = 45,853.40/x
  3. Step 3: Cross multiply
    51,738.86x = 77,662.58 × 45,853.40
  4. Step 4: Simplify right side
    51,738.86x = 3,561,093,345.77
  5. Step 5: Solve for x
    x = 3,561,093,345.77/51,738.86
  6. Step 6: Final answer
    x = 68,828.21

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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.