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Finding the Fourth Proportional to 56,107.70, 84,161.55 and 55,718.90

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Solution

The fourth proportional to 56,107.70, 84,161.55 and 55,718.90 is: 83,578.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,107.70 : 84,161.55 = 55,718.90 : x
  2. Step 2: Convert to fraction form
    56,107.70/84,161.55 = 55,718.90/x
  3. Step 3: Cross multiply
    56,107.70x = 84,161.55 × 55,718.90
  4. Step 4: Simplify right side
    56,107.70x = 4,689,388,988.30
  5. Step 5: Solve for x
    x = 4,689,388,988.30/56,107.70
  6. Step 6: Final answer
    x = 83,578.35

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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.