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Finding the Fourth Proportional to 56,390.80, 77,813.88 and 33,725.20

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Solution

The fourth proportional to 56,390.80, 77,813.88 and 33,725.20 is: 46,537.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,390.80 : 77,813.88 = 33,725.20 : x
  2. Step 2: Convert to fraction form
    56,390.80/77,813.88 = 33,725.20/x
  3. Step 3: Cross multiply
    56,390.80x = 77,813.88 × 33,725.20
  4. Step 4: Simplify right side
    56,390.80x = 2,624,288,665.78
  5. Step 5: Solve for x
    x = 2,624,288,665.78/56,390.80
  6. Step 6: Final answer
    x = 46,537.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.