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Finding the Fourth Proportional to 73,872.40, 103,683.80 and 73,872.40

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Solution

The fourth proportional to 73,872.40, 103,683.80 and 73,872.40 is: 103,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,872.40 : 103,683.80 = 73,872.40 : x
  2. Step 2: Convert to fraction form
    73,872.40/103,683.80 = 73,872.40/x
  3. Step 3: Cross multiply
    73,872.40x = 103,683.80 × 73,872.40
  4. Step 4: Simplify right side
    73,872.40x = 7,659,371,147.12
  5. Step 5: Solve for x
    x = 7,659,371,147.12/73,872.40
  6. Step 6: Final answer
    x = 103,683.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.