Home / 57,128.05-85,709.58-25,564.68

Finding the Fourth Proportional to 57,128.05, 85,709.58 and 25,564.68

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Solution

The fourth proportional to 57,128.05, 85,709.58 and 25,564.68 is: 38,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,128.05 : 85,709.58 = 25,564.68 : x
  2. Step 2: Convert to fraction form
    57,128.05/85,709.58 = 25,564.68/x
  3. Step 3: Cross multiply
    57,128.05x = 85,709.58 × 25,564.68
  4. Step 4: Simplify right side
    57,128.05x = 2,191,137,985.63
  5. Step 5: Solve for x
    x = 2,191,137,985.63/57,128.05
  6. Step 6: Final answer
    x = 38,354.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.