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Finding the Fourth Proportional to 51,872.70, 77,809.05 and 25,628.70

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Solution

The fourth proportional to 51,872.70, 77,809.05 and 25,628.70 is: 38,443.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,872.70 : 77,809.05 = 25,628.70 : x
  2. Step 2: Convert to fraction form
    51,872.70/77,809.05 = 25,628.70/x
  3. Step 3: Cross multiply
    51,872.70x = 77,809.05 × 25,628.70
  4. Step 4: Simplify right side
    51,872.70x = 1,994,144,799.74
  5. Step 5: Solve for x
    x = 1,994,144,799.74/51,872.70
  6. Step 6: Final answer
    x = 38,443.05

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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.