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Finding the Fourth Proportional to 57,285.40, 85,928.10 and 57,285.40

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Solution

The fourth proportional to 57,285.40, 85,928.10 and 57,285.40 is: 85,928.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,285.40 : 85,928.10 = 57,285.40 : x
  2. Step 2: Convert to fraction form
    57,285.40/85,928.10 = 57,285.40/x
  3. Step 3: Cross multiply
    57,285.40x = 85,928.10 × 57,285.40
  4. Step 4: Simplify right side
    57,285.40x = 4,922,425,579.74
  5. Step 5: Solve for x
    x = 4,922,425,579.74/57,285.40
  6. Step 6: Final answer
    x = 85,928.10

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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.