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Finding the Fourth Proportional to 37,480.08, 51,720.48 and 20,712

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Solution

The fourth proportional to 37,480.08, 51,720.48 and 20,712 is: 28,581.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,480.08 : 51,720.48 = 20,712 : x
  2. Step 2: Convert to fraction form
    37,480.08/51,720.48 = 20,712/x
  3. Step 3: Cross multiply
    37,480.08x = 51,720.48 × 20,712
  4. Step 4: Simplify right side
    37,480.08x = 1,071,234,581.76
  5. Step 5: Solve for x
    x = 1,071,234,581.76/37,480.08
  6. Step 6: Final answer
    x = 28,581.44

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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.