Home / 45,719.40-68,579.10-45,427.80

Finding the Fourth Proportional to 45,719.40, 68,579.10 and 45,427.80

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Solution

The fourth proportional to 45,719.40, 68,579.10 and 45,427.80 is: 68,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,719.40 : 68,579.10 = 45,427.80 : x
  2. Step 2: Convert to fraction form
    45,719.40/68,579.10 = 45,427.80/x
  3. Step 3: Cross multiply
    45,719.40x = 68,579.10 × 45,427.80
  4. Step 4: Simplify right side
    45,719.40x = 3,115,397,638.98
  5. Step 5: Solve for x
    x = 3,115,397,638.98/45,719.40
  6. Step 6: Final answer
    x = 68,141.70

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Similar ratio
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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.