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Finding the Fourth Proportional to 91,996.80, 126,950.40 and 54,283.20

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Solution

The fourth proportional to 91,996.80, 126,950.40 and 54,283.20 is: 74,907.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,996.80 : 126,950.40 = 54,283.20 : x
  2. Step 2: Convert to fraction form
    91,996.80/126,950.40 = 54,283.20/x
  3. Step 3: Cross multiply
    91,996.80x = 126,950.40 × 54,283.20
  4. Step 4: Simplify right side
    91,996.80x = 6,891,273,953.28
  5. Step 5: Solve for x
    x = 6,891,273,953.28/91,996.80
  6. Step 6: Final answer
    x = 74,907.76

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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.