Home / 56,855.20-78,479.76-34,206.88

Finding the Fourth Proportional to 56,855.20, 78,479.76 and 34,206.88

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Solution

The fourth proportional to 56,855.20, 78,479.76 and 34,206.88 is: 47,217.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,855.20 : 78,479.76 = 34,206.88 : x
  2. Step 2: Convert to fraction form
    56,855.20/78,479.76 = 34,206.88/x
  3. Step 3: Cross multiply
    56,855.20x = 78,479.76 × 34,206.88
  4. Step 4: Simplify right side
    56,855.20x = 2,684,547,732.75
  5. Step 5: Solve for x
    x = 2,684,547,732.75/56,855.20
  6. Step 6: Final answer
    x = 47,217.28

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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.