Home / 72,940.02-109,428.49-20,349.47

Finding the Fourth Proportional to 72,940.02, 109,428.49 and 20,349.47

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Solution

The fourth proportional to 72,940.02, 109,428.49 and 20,349.47 is: 30,529.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,940.02 : 109,428.49 = 20,349.47 : x
  2. Step 2: Convert to fraction form
    72,940.02/109,428.49 = 20,349.47/x
  3. Step 3: Cross multiply
    72,940.02x = 109,428.49 × 20,349.47
  4. Step 4: Simplify right side
    72,940.02x = 2,226,811,774.40
  5. Step 5: Solve for x
    x = 2,226,811,774.40/72,940.02
  6. Step 6: Final answer
    x = 30,529.36

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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.