Home / 57,256.90-78,987.30-38,145.56

Finding the Fourth Proportional to 57,256.90, 78,987.30 and 38,145.56

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Solution

The fourth proportional to 57,256.90, 78,987.30 and 38,145.56 is: 52,622.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,256.90 : 78,987.30 = 38,145.56 : x
  2. Step 2: Convert to fraction form
    57,256.90/78,987.30 = 38,145.56/x
  3. Step 3: Cross multiply
    57,256.90x = 78,987.30 × 38,145.56
  4. Step 4: Simplify right side
    57,256.90x = 3,013,014,791.39
  5. Step 5: Solve for x
    x = 3,013,014,791.39/57,256.90
  6. Step 6: Final answer
    x = 52,622.74

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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.