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Finding the Fourth Proportional to 90,784.88, 125,283.12 and 51,040.88

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Solution

The fourth proportional to 90,784.88, 125,283.12 and 51,040.88 is: 70,436.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,784.88 : 125,283.12 = 51,040.88 : x
  2. Step 2: Convert to fraction form
    90,784.88/125,283.12 = 51,040.88/x
  3. Step 3: Cross multiply
    90,784.88x = 125,283.12 × 51,040.88
  4. Step 4: Simplify right side
    90,784.88x = 6,394,560,693.95
  5. Step 5: Solve for x
    x = 6,394,560,693.95/90,784.88
  6. Step 6: Final answer
    x = 70,436.41

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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.