Home / 57,123.60-85,685.40-40,502.40

Finding the Fourth Proportional to 57,123.60, 85,685.40 and 40,502.40

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Solution

The fourth proportional to 57,123.60, 85,685.40 and 40,502.40 is: 60,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,123.60 : 85,685.40 = 40,502.40 : x
  2. Step 2: Convert to fraction form
    57,123.60/85,685.40 = 40,502.40/x
  3. Step 3: Cross multiply
    57,123.60x = 85,685.40 × 40,502.40
  4. Step 4: Simplify right side
    57,123.60x = 3,470,464,344.96
  5. Step 5: Solve for x
    x = 3,470,464,344.96/57,123.60
  6. Step 6: Final answer
    x = 60,753.60

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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.