Home / 57,107.60-85,661.40-38,445.20

Finding the Fourth Proportional to 57,107.60, 85,661.40 and 38,445.20

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Solution

The fourth proportional to 57,107.60, 85,661.40 and 38,445.20 is: 57,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,107.60 : 85,661.40 = 38,445.20 : x
  2. Step 2: Convert to fraction form
    57,107.60/85,661.40 = 38,445.20/x
  3. Step 3: Cross multiply
    57,107.60x = 85,661.40 × 38,445.20
  4. Step 4: Simplify right side
    57,107.60x = 3,293,269,655.28
  5. Step 5: Solve for x
    x = 3,293,269,655.28/57,107.60
  6. Step 6: Final answer
    x = 57,667.80

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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.