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Finding the Fourth Proportional to 84,002.37, 125,959.80 and 39,617.20

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Solution

The fourth proportional to 84,002.37, 125,959.80 and 39,617.20 is: 59,405.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,002.37 : 125,959.80 = 39,617.20 : x
  2. Step 2: Convert to fraction form
    84,002.37/125,959.80 = 39,617.20/x
  3. Step 3: Cross multiply
    84,002.37x = 125,959.80 × 39,617.20
  4. Step 4: Simplify right side
    84,002.37x = 4,990,174,588.56
  5. Step 5: Solve for x
    x = 4,990,174,588.56/84,002.37
  6. Step 6: Final answer
    x = 59,405.16

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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.