Home / 42,558.33-63,740.21-20,387.37

Finding the Fourth Proportional to 42,558.33, 63,740.21 and 20,387.37

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Solution

The fourth proportional to 42,558.33, 63,740.21 and 20,387.37 is: 30,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,558.33 : 63,740.21 = 20,387.37 : x
  2. Step 2: Convert to fraction form
    42,558.33/63,740.21 = 20,387.37/x
  3. Step 3: Cross multiply
    42,558.33x = 63,740.21 × 20,387.37
  4. Step 4: Simplify right side
    42,558.33x = 1,299,495,143.21
  5. Step 5: Solve for x
    x = 1,299,495,143.21/42,558.33
  6. Step 6: Final answer
    x = 30,534.45

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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.