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Finding the Fourth Proportional to 52,770.40, 79,040.40 and 51,618.40

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Solution

The fourth proportional to 52,770.40, 79,040.40 and 51,618.40 is: 77,314.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,770.40 : 79,040.40 = 51,618.40 : x
  2. Step 2: Convert to fraction form
    52,770.40/79,040.40 = 51,618.40/x
  3. Step 3: Cross multiply
    52,770.40x = 79,040.40 × 51,618.40
  4. Step 4: Simplify right side
    52,770.40x = 4,079,938,983.36
  5. Step 5: Solve for x
    x = 4,079,938,983.36/52,770.40
  6. Step 6: Final answer
    x = 77,314.91

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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.