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Finding the Fourth Proportional to 90,782.70, 125,283.69 and 54,952.44

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Solution

The fourth proportional to 90,782.70, 125,283.69 and 54,952.44 is: 75,836.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,782.70 : 125,283.69 = 54,952.44 : x
  2. Step 2: Convert to fraction form
    90,782.70/125,283.69 = 54,952.44/x
  3. Step 3: Cross multiply
    90,782.70x = 125,283.69 × 54,952.44
  4. Step 4: Simplify right side
    90,782.70x = 6,884,644,457.70
  5. Step 5: Solve for x
    x = 6,884,644,457.70/90,782.70
  6. Step 6: Final answer
    x = 75,836.52

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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.