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Finding the Fourth Proportional to 56,701.80, 85,052.70 and 19,271.70

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Solution

The fourth proportional to 56,701.80, 85,052.70 and 19,271.70 is: 28,907.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,701.80 : 85,052.70 = 19,271.70 : x
  2. Step 2: Convert to fraction form
    56,701.80/85,052.70 = 19,271.70/x
  3. Step 3: Cross multiply
    56,701.80x = 85,052.70 × 19,271.70
  4. Step 4: Simplify right side
    56,701.80x = 1,639,110,118.59
  5. Step 5: Solve for x
    x = 1,639,110,118.59/56,701.80
  6. Step 6: Final answer
    x = 28,907.55

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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.