Home / 42,724.11-64,100.00-20,539.21

Finding the Fourth Proportional to 42,724.11, 64,100.00 and 20,539.21

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Solution

The fourth proportional to 42,724.11, 64,100.00 and 20,539.21 is: 30,815.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,724.11 : 64,100.00 = 20,539.21 : x
  2. Step 2: Convert to fraction form
    42,724.11/64,100.00 = 20,539.21/x
  3. Step 3: Cross multiply
    42,724.11x = 64,100.00 × 20,539.21
  4. Step 4: Simplify right side
    42,724.11x = 1,316,563,673.34
  5. Step 5: Solve for x
    x = 1,316,563,673.34/42,724.11
  6. Step 6: Final answer
    x = 30,815.47

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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.