Home / 57,076.55-78,760.27-38,642.16

Finding the Fourth Proportional to 57,076.55, 78,760.27 and 38,642.16

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Solution

The fourth proportional to 57,076.55, 78,760.27 and 38,642.16 is: 53,322.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,076.55 : 78,760.27 = 38,642.16 : x
  2. Step 2: Convert to fraction form
    57,076.55/78,760.27 = 38,642.16/x
  3. Step 3: Cross multiply
    57,076.55x = 78,760.27 × 38,642.16
  4. Step 4: Simplify right side
    57,076.55x = 3,043,466,761.77
  5. Step 5: Solve for x
    x = 3,043,466,761.77/57,076.55
  6. Step 6: Final answer
    x = 53,322.55

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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.