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Finding the Fourth Proportional to 124,055.80, 186,080.24 and 39,815.30

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Solution

The fourth proportional to 124,055.80, 186,080.24 and 39,815.30 is: 59,721.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,055.80 : 186,080.24 = 39,815.30 : x
  2. Step 2: Convert to fraction form
    124,055.80/186,080.24 = 39,815.30/x
  3. Step 3: Cross multiply
    124,055.80x = 186,080.24 × 39,815.30
  4. Step 4: Simplify right side
    124,055.80x = 7,408,841,144.41
  5. Step 5: Solve for x
    x = 7,408,841,144.41/124,055.80
  6. Step 6: Final answer
    x = 59,721.85

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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.