Home / 57,378.42-85,490.93-54,155.45

Finding the Fourth Proportional to 57,378.42, 85,490.93 and 54,155.45

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Solution

The fourth proportional to 57,378.42, 85,490.93 and 54,155.45 is: 80,688.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,378.42 : 85,490.93 = 54,155.45 : x
  2. Step 2: Convert to fraction form
    57,378.42/85,490.93 = 54,155.45/x
  3. Step 3: Cross multiply
    57,378.42x = 85,490.93 × 54,155.45
  4. Step 4: Simplify right side
    57,378.42x = 4,629,800,134.18
  5. Step 5: Solve for x
    x = 4,629,800,134.18/57,378.42
  6. Step 6: Final answer
    x = 80,688.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.