Home / 78,885.31-118,362.65-41,436.68

Finding the Fourth Proportional to 78,885.31, 118,362.65 and 41,436.68

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Solution

The fourth proportional to 78,885.31, 118,362.65 and 41,436.68 is: 62,173.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,885.31 : 118,362.65 = 41,436.68 : x
  2. Step 2: Convert to fraction form
    78,885.31/118,362.65 = 41,436.68/x
  3. Step 3: Cross multiply
    78,885.31x = 118,362.65 × 41,436.68
  4. Step 4: Simplify right side
    78,885.31x = 4,904,555,044.82
  5. Step 5: Solve for x
    x = 4,904,555,044.82/78,885.31
  6. Step 6: Final answer
    x = 62,173.24

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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.