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Finding the Fourth Proportional to 51,193.80, 76,905.90 and 49,811.40

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Solution

The fourth proportional to 51,193.80, 76,905.90 and 49,811.40 is: 74,829.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,193.80 : 76,905.90 = 49,811.40 : x
  2. Step 2: Convert to fraction form
    51,193.80/76,905.90 = 49,811.40/x
  3. Step 3: Cross multiply
    51,193.80x = 76,905.90 × 49,811.40
  4. Step 4: Simplify right side
    51,193.80x = 3,830,790,547.26
  5. Step 5: Solve for x
    x = 3,830,790,547.26/51,193.80
  6. Step 6: Final answer
    x = 74,829.19

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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.