Home / 39,978.21-55,170.02-22,073.25

Finding the Fourth Proportional to 39,978.21, 55,170.02 and 22,073.25

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Solution

The fourth proportional to 39,978.21, 55,170.02 and 22,073.25 is: 30,461.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,978.21 : 55,170.02 = 22,073.25 : x
  2. Step 2: Convert to fraction form
    39,978.21/55,170.02 = 22,073.25/x
  3. Step 3: Cross multiply
    39,978.21x = 55,170.02 × 22,073.25
  4. Step 4: Simplify right side
    39,978.21x = 1,217,781,533.60
  5. Step 5: Solve for x
    x = 1,217,781,533.60/39,978.21
  6. Step 6: Final answer
    x = 30,461.13

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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.