Home / 56,905.40-85,358.10-39,190.70

Finding the Fourth Proportional to 56,905.40, 85,358.10 and 39,190.70

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Solution

The fourth proportional to 56,905.40, 85,358.10 and 39,190.70 is: 58,786.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,905.40 : 85,358.10 = 39,190.70 : x
  2. Step 2: Convert to fraction form
    56,905.40/85,358.10 = 39,190.70/x
  3. Step 3: Cross multiply
    56,905.40x = 85,358.10 × 39,190.70
  4. Step 4: Simplify right side
    56,905.40x = 3,345,243,689.67
  5. Step 5: Solve for x
    x = 3,345,243,689.67/56,905.40
  6. Step 6: Final answer
    x = 58,786.05

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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.