Home / 65,239.15-90,028.50-38,383.39

Finding the Fourth Proportional to 65,239.15, 90,028.50 and 38,383.39

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Solution

The fourth proportional to 65,239.15, 90,028.50 and 38,383.39 is: 52,968.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,239.15 : 90,028.50 = 38,383.39 : x
  2. Step 2: Convert to fraction form
    65,239.15/90,028.50 = 38,383.39/x
  3. Step 3: Cross multiply
    65,239.15x = 90,028.50 × 38,383.39
  4. Step 4: Simplify right side
    65,239.15x = 3,455,599,026.62
  5. Step 5: Solve for x
    x = 3,455,599,026.62/65,239.15
  6. Step 6: Final answer
    x = 52,968.18

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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.