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Finding the Fourth Proportional to 45,681, 68,152.98 and 40,694.64

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Solution

The fourth proportional to 45,681, 68,152.98 and 40,694.64 is: 60,713.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,681 : 68,152.98 = 40,694.64 : x
  2. Step 2: Convert to fraction form
    45,681/68,152.98 = 40,694.64/x
  3. Step 3: Cross multiply
    45,681x = 68,152.98 × 40,694.64
  4. Step 4: Simplify right side
    45,681x = 2,773,460,986.03
  5. Step 5: Solve for x
    x = 2,773,460,986.03/45,681
  6. Step 6: Final answer
    x = 60,713.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.