Home / 66,273.12-91,490.79-51,131.76

Finding the Fourth Proportional to 66,273.12, 91,490.79 and 51,131.76

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Solution

The fourth proportional to 66,273.12, 91,490.79 and 51,131.76 is: 70,587.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,273.12 : 91,490.79 = 51,131.76 : x
  2. Step 2: Convert to fraction form
    66,273.12/91,490.79 = 51,131.76/x
  3. Step 3: Cross multiply
    66,273.12x = 91,490.79 × 51,131.76
  4. Step 4: Simplify right side
    66,273.12x = 4,678,085,116.49
  5. Step 5: Solve for x
    x = 4,678,085,116.49/66,273.12
  6. Step 6: Final answer
    x = 70,587.97

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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.