Home / 45,103.02-67,646.60-13,938.54

Finding the Fourth Proportional to 45,103.02, 67,646.60 and 13,938.54

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Solution

The fourth proportional to 45,103.02, 67,646.60 and 13,938.54 is: 20,905.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,103.02 : 67,646.60 = 13,938.54 : x
  2. Step 2: Convert to fraction form
    45,103.02/67,646.60 = 13,938.54/x
  3. Step 3: Cross multiply
    45,103.02x = 67,646.60 × 13,938.54
  4. Step 4: Simplify right side
    45,103.02x = 942,894,839.96
  5. Step 5: Solve for x
    x = 942,894,839.96/45,103.02
  6. Step 6: Final answer
    x = 20,905.36

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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.