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Finding the Fourth Proportional to 37,072.80, 51,154.80 and 21,158.40

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Solution

The fourth proportional to 37,072.80, 51,154.80 and 21,158.40 is: 29,195.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,072.80 : 51,154.80 = 21,158.40 : x
  2. Step 2: Convert to fraction form
    37,072.80/51,154.80 = 21,158.40/x
  3. Step 3: Cross multiply
    37,072.80x = 51,154.80 × 21,158.40
  4. Step 4: Simplify right side
    37,072.80x = 1,082,353,720.32
  5. Step 5: Solve for x
    x = 1,082,353,720.32/37,072.80
  6. Step 6: Final answer
    x = 29,195.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.