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Finding the Fourth Proportional to 57,200.40, 85,800.60 and 30,956.40

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Solution

The fourth proportional to 57,200.40, 85,800.60 and 30,956.40 is: 46,434.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,200.40 : 85,800.60 = 30,956.40 : x
  2. Step 2: Convert to fraction form
    57,200.40/85,800.60 = 30,956.40/x
  3. Step 3: Cross multiply
    57,200.40x = 85,800.60 × 30,956.40
  4. Step 4: Simplify right side
    57,200.40x = 2,656,077,693.84
  5. Step 5: Solve for x
    x = 2,656,077,693.84/57,200.40
  6. Step 6: Final answer
    x = 46,434.60

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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.