Home / 66,777.76-92,157.78-38,485.36

Finding the Fourth Proportional to 66,777.76, 92,157.78 and 38,485.36

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Solution

The fourth proportional to 66,777.76, 92,157.78 and 38,485.36 is: 53,112.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,777.76 : 92,157.78 = 38,485.36 : x
  2. Step 2: Convert to fraction form
    66,777.76/92,157.78 = 38,485.36/x
  3. Step 3: Cross multiply
    66,777.76x = 92,157.78 × 38,485.36
  4. Step 4: Simplify right side
    66,777.76x = 3,546,725,340.10
  5. Step 5: Solve for x
    x = 3,546,725,340.10/66,777.76
  6. Step 6: Final answer
    x = 53,112.37

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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.