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Finding the Fourth Proportional to 78,956.88, 118,480.12 and 29,030.48

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Solution

The fourth proportional to 78,956.88, 118,480.12 and 29,030.48 is: 43,562.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,956.88 : 118,480.12 = 29,030.48 : x
  2. Step 2: Convert to fraction form
    78,956.88/118,480.12 = 29,030.48/x
  3. Step 3: Cross multiply
    78,956.88x = 118,480.12 × 29,030.48
  4. Step 4: Simplify right side
    78,956.88x = 3,439,534,754.06
  5. Step 5: Solve for x
    x = 3,439,534,754.06/78,956.88
  6. Step 6: Final answer
    x = 43,562.19

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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.