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Finding the Fourth Proportional to 78,903.81, 108,890.10 and 43,095.33

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Solution

The fourth proportional to 78,903.81, 108,890.10 and 43,095.33 is: 59,473.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,903.81 : 108,890.10 = 43,095.33 : x
  2. Step 2: Convert to fraction form
    78,903.81/108,890.10 = 43,095.33/x
  3. Step 3: Cross multiply
    78,903.81x = 108,890.10 × 43,095.33
  4. Step 4: Simplify right side
    78,903.81x = 4,692,654,793.23
  5. Step 5: Solve for x
    x = 4,692,654,793.23/78,903.81
  6. Step 6: Final answer
    x = 59,473.11

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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.