Home / 56,500.92-78,000.30-39,808.44

Finding the Fourth Proportional to 56,500.92, 78,000.30 and 39,808.44

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Solution

The fourth proportional to 56,500.92, 78,000.30 and 39,808.44 is: 54,956.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,500.92 : 78,000.30 = 39,808.44 : x
  2. Step 2: Convert to fraction form
    56,500.92/78,000.30 = 39,808.44/x
  3. Step 3: Cross multiply
    56,500.92x = 78,000.30 × 39,808.44
  4. Step 4: Simplify right side
    56,500.92x = 3,105,070,262.53
  5. Step 5: Solve for x
    x = 3,105,070,262.53/56,500.92
  6. Step 6: Final answer
    x = 54,956.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.