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Finding the Fourth Proportional to 45,420.70, 68,131.05 and 35,568.40

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Solution

The fourth proportional to 45,420.70, 68,131.05 and 35,568.40 is: 53,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,420.70 : 68,131.05 = 35,568.40 : x
  2. Step 2: Convert to fraction form
    45,420.70/68,131.05 = 35,568.40/x
  3. Step 3: Cross multiply
    45,420.70x = 68,131.05 × 35,568.40
  4. Step 4: Simplify right side
    45,420.70x = 2,423,312,438.82
  5. Step 5: Solve for x
    x = 2,423,312,438.82/45,420.70
  6. Step 6: Final answer
    x = 53,352.60

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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.