Home / 78,623.08-117,836.15-61,917.12

Finding the Fourth Proportional to 78,623.08, 117,836.15 and 61,917.12

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Solution

The fourth proportional to 78,623.08, 117,836.15 and 61,917.12 is: 92,798.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,623.08 : 117,836.15 = 61,917.12 : x
  2. Step 2: Convert to fraction form
    78,623.08/117,836.15 = 61,917.12/x
  3. Step 3: Cross multiply
    78,623.08x = 117,836.15 × 61,917.12
  4. Step 4: Simplify right side
    78,623.08x = 7,296,074,730.30
  5. Step 5: Solve for x
    x = 7,296,074,730.30/78,623.08
  6. Step 6: Final answer
    x = 92,798.13

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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.