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Finding the Fourth Proportional to 55,761.84, 76,952.88 and 31,560.88

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Solution

The fourth proportional to 55,761.84, 76,952.88 and 31,560.88 is: 43,554.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,761.84 : 76,952.88 = 31,560.88 : x
  2. Step 2: Convert to fraction form
    55,761.84/76,952.88 = 31,560.88/x
  3. Step 3: Cross multiply
    55,761.84x = 76,952.88 × 31,560.88
  4. Step 4: Simplify right side
    55,761.84x = 2,428,700,611.33
  5. Step 5: Solve for x
    x = 2,428,700,611.33/55,761.84
  6. Step 6: Final answer
    x = 43,554.89

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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.