Home / 55,138-76,090.44-29,988.04

Finding the Fourth Proportional to 55,138, 76,090.44 and 29,988.04

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Solution

The fourth proportional to 55,138, 76,090.44 and 29,988.04 is: 41,383.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,138 : 76,090.44 = 29,988.04 : x
  2. Step 2: Convert to fraction form
    55,138/76,090.44 = 29,988.04/x
  3. Step 3: Cross multiply
    55,138x = 76,090.44 × 29,988.04
  4. Step 4: Simplify right side
    55,138x = 2,281,803,158.34
  5. Step 5: Solve for x
    x = 2,281,803,158.34/55,138
  6. Step 6: Final answer
    x = 41,383.50

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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.