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Finding the Fourth Proportional to 78,937.51, 108,932.50 and 43,126.75

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Solution

The fourth proportional to 78,937.51, 108,932.50 and 43,126.75 is: 59,514.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,937.51 : 108,932.50 = 43,126.75 : x
  2. Step 2: Convert to fraction form
    78,937.51/108,932.50 = 43,126.75/x
  3. Step 3: Cross multiply
    78,937.51x = 108,932.50 × 43,126.75
  4. Step 4: Simplify right side
    78,937.51x = 4,697,904,948.23
  5. Step 5: Solve for x
    x = 4,697,904,948.23/78,937.51
  6. Step 6: Final answer
    x = 59,514.23

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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.