Home / 68,115.30-93,985.04-39,815.52

Finding the Fourth Proportional to 68,115.30, 93,985.04 and 39,815.52

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Solution

The fourth proportional to 68,115.30, 93,985.04 and 39,815.52 is: 54,937.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,115.30 : 93,985.04 = 39,815.52 : x
  2. Step 2: Convert to fraction form
    68,115.30/93,985.04 = 39,815.52/x
  3. Step 3: Cross multiply
    68,115.30x = 93,985.04 × 39,815.52
  4. Step 4: Simplify right side
    68,115.30x = 3,742,063,239.82
  5. Step 5: Solve for x
    x = 3,742,063,239.82/68,115.30
  6. Step 6: Final answer
    x = 54,937.19

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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.