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Finding the Fourth Proportional to 37,663.52, 51,978.89 and 20,671.05

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Solution

The fourth proportional to 37,663.52, 51,978.89 and 20,671.05 is: 28,527.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,663.52 : 51,978.89 = 20,671.05 : x
  2. Step 2: Convert to fraction form
    37,663.52/51,978.89 = 20,671.05/x
  3. Step 3: Cross multiply
    37,663.52x = 51,978.89 × 20,671.05
  4. Step 4: Simplify right side
    37,663.52x = 1,074,457,935.86
  5. Step 5: Solve for x
    x = 1,074,457,935.86/37,663.52
  6. Step 6: Final answer
    x = 28,527.82

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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.