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Finding the Fourth Proportional to 123,873.65, 185,822.77 and 39,612.64

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Solution

The fourth proportional to 123,873.65, 185,822.77 and 39,612.64 is: 59,422.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,873.65 : 185,822.77 = 39,612.64 : x
  2. Step 2: Convert to fraction form
    123,873.65/185,822.77 = 39,612.64/x
  3. Step 3: Cross multiply
    123,873.65x = 185,822.77 × 39,612.64
  4. Step 4: Simplify right side
    123,873.65x = 7,360,929,928.22
  5. Step 5: Solve for x
    x = 7,360,929,928.22/123,873.65
  6. Step 6: Final answer
    x = 59,422.89

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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.