Home / 72,939.02-109,426.99-20,348.47

Finding the Fourth Proportional to 72,939.02, 109,426.99 and 20,348.47

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Solution

The fourth proportional to 72,939.02, 109,426.99 and 20,348.47 is: 30,527.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,939.02 : 109,426.99 = 20,348.47 : x
  2. Step 2: Convert to fraction form
    72,939.02/109,426.99 = 20,348.47/x
  3. Step 3: Cross multiply
    72,939.02x = 109,426.99 × 20,348.47
  4. Step 4: Simplify right side
    72,939.02x = 2,226,671,498.77
  5. Step 5: Solve for x
    x = 2,226,671,498.77/72,939.02
  6. Step 6: Final answer
    x = 30,527.85

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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.