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Finding the Fourth Proportional to 58,786, 81,125.28 and 31,929.03

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Solution

The fourth proportional to 58,786, 81,125.28 and 31,929.03 is: 44,062.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,786 : 81,125.28 = 31,929.03 : x
  2. Step 2: Convert to fraction form
    58,786/81,125.28 = 31,929.03/x
  3. Step 3: Cross multiply
    58,786x = 81,125.28 × 31,929.03
  4. Step 4: Simplify right side
    58,786x = 2,590,251,498.88
  5. Step 5: Solve for x
    x = 2,590,251,498.88/58,786
  6. Step 6: Final answer
    x = 44,062.39

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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.