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Finding the Fourth Proportional to 51,257.80, 76,886.70 and 14,321.80

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Solution

The fourth proportional to 51,257.80, 76,886.70 and 14,321.80 is: 21,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,257.80 : 76,886.70 = 14,321.80 : x
  2. Step 2: Convert to fraction form
    51,257.80/76,886.70 = 14,321.80/x
  3. Step 3: Cross multiply
    51,257.80x = 76,886.70 × 14,321.80
  4. Step 4: Simplify right side
    51,257.80x = 1,101,155,940.06
  5. Step 5: Solve for x
    x = 1,101,155,940.06/51,257.80
  6. Step 6: Final answer
    x = 21,482.70

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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.