Home / 48,090.18-72,135.30-20,009.70

Finding the Fourth Proportional to 48,090.18, 72,135.30 and 20,009.70

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Solution

The fourth proportional to 48,090.18, 72,135.30 and 20,009.70 is: 30,014.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,090.18 : 72,135.30 = 20,009.70 : x
  2. Step 2: Convert to fraction form
    48,090.18/72,135.30 = 20,009.70/x
  3. Step 3: Cross multiply
    48,090.18x = 72,135.30 × 20,009.70
  4. Step 4: Simplify right side
    48,090.18x = 1,443,405,712.41
  5. Step 5: Solve for x
    x = 1,443,405,712.41/48,090.18
  6. Step 6: Final answer
    x = 30,014.56

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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.