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Finding the Fourth Proportional to 55,477.67, 76,563.88 and 31,283.30

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Solution

The fourth proportional to 55,477.67, 76,563.88 and 31,283.30 is: 43,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,477.67 : 76,563.88 = 31,283.30 : x
  2. Step 2: Convert to fraction form
    55,477.67/76,563.88 = 31,283.30/x
  3. Step 3: Cross multiply
    55,477.67x = 76,563.88 × 31,283.30
  4. Step 4: Simplify right side
    55,477.67x = 2,395,170,667.47
  5. Step 5: Solve for x
    x = 2,395,170,667.47/55,477.67
  6. Step 6: Final answer
    x = 43,173.60

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1.5x scale

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.