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Finding the Fourth Proportional to 37,761.80, 56,642.70 and 13,137.80

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Solution

The fourth proportional to 37,761.80, 56,642.70 and 13,137.80 is: 19,706.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,761.80 : 56,642.70 = 13,137.80 : x
  2. Step 2: Convert to fraction form
    37,761.80/56,642.70 = 13,137.80/x
  3. Step 3: Cross multiply
    37,761.80x = 56,642.70 × 13,137.80
  4. Step 4: Simplify right side
    37,761.80x = 744,160,464.06
  5. Step 5: Solve for x
    x = 744,160,464.06/37,761.80
  6. Step 6: Final answer
    x = 19,706.70

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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.