Home / 83,974.87-115,847.85-56,742.16

Finding the Fourth Proportional to 83,974.87, 115,847.85 and 56,742.16

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Solution

The fourth proportional to 83,974.87, 115,847.85 and 56,742.16 is: 78,278.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,974.87 : 115,847.85 = 56,742.16 : x
  2. Step 2: Convert to fraction form
    83,974.87/115,847.85 = 56,742.16/x
  3. Step 3: Cross multiply
    83,974.87x = 115,847.85 × 56,742.16
  4. Step 4: Simplify right side
    83,974.87x = 6,573,457,240.36
  5. Step 5: Solve for x
    x = 6,573,457,240.36/83,974.87
  6. Step 6: Final answer
    x = 78,278.86

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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.