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Finding the Fourth Proportional to 37,812.70, 56,719.05 and 12,880.90

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Solution

The fourth proportional to 37,812.70, 56,719.05 and 12,880.90 is: 19,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,812.70 : 56,719.05 = 12,880.90 : x
  2. Step 2: Convert to fraction form
    37,812.70/56,719.05 = 12,880.90/x
  3. Step 3: Cross multiply
    37,812.70x = 56,719.05 × 12,880.90
  4. Step 4: Simplify right side
    37,812.70x = 730,592,411.15
  5. Step 5: Solve for x
    x = 730,592,411.15/37,812.70
  6. Step 6: Final answer
    x = 19,321.35

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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.