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Finding the Fourth Proportional to 78,903.76, 108,888.04 and 43,094.80

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Solution

The fourth proportional to 78,903.76, 108,888.04 and 43,094.80 is: 59,471.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,903.76 : 108,888.04 = 43,094.80 : x
  2. Step 2: Convert to fraction form
    78,903.76/108,888.04 = 43,094.80/x
  3. Step 3: Cross multiply
    78,903.76x = 108,888.04 × 43,094.80
  4. Step 4: Simplify right side
    78,903.76x = 4,692,508,306.19
  5. Step 5: Solve for x
    x = 4,692,508,306.19/78,903.76
  6. Step 6: Final answer
    x = 59,471.29

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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.