Home / 78,815.04-108,769.08-43,005.30

Finding the Fourth Proportional to 78,815.04, 108,769.08 and 43,005.30

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Solution

The fourth proportional to 78,815.04, 108,769.08 and 43,005.30 is: 59,349.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,815.04 : 108,769.08 = 43,005.30 : x
  2. Step 2: Convert to fraction form
    78,815.04/108,769.08 = 43,005.30/x
  3. Step 3: Cross multiply
    78,815.04x = 108,769.08 × 43,005.30
  4. Step 4: Simplify right side
    78,815.04x = 4,677,647,345.34
  5. Step 5: Solve for x
    x = 4,677,647,345.34/78,815.04
  6. Step 6: Final answer
    x = 59,349.68

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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.