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Finding the Fourth Proportional to 36,468.80, 54,702.40 and 10,172.80

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Solution

The fourth proportional to 36,468.80, 54,702.40 and 10,172.80 is: 15,258.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,468.80 : 54,702.40 = 10,172.80 : x
  2. Step 2: Convert to fraction form
    36,468.80/54,702.40 = 10,172.80/x
  3. Step 3: Cross multiply
    36,468.80x = 54,702.40 × 10,172.80
  4. Step 4: Simplify right side
    36,468.80x = 556,476,574.72
  5. Step 5: Solve for x
    x = 556,476,574.72/36,468.80
  6. Step 6: Final answer
    x = 15,258.98

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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.