Home / 105,712.66-145,887.68-57,967.72

Finding the Fourth Proportional to 105,712.66, 145,887.68 and 57,967.72

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Solution

The fourth proportional to 105,712.66, 145,887.68 and 57,967.72 is: 79,997.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,712.66 : 145,887.68 = 57,967.72 : x
  2. Step 2: Convert to fraction form
    105,712.66/145,887.68 = 57,967.72/x
  3. Step 3: Cross multiply
    105,712.66x = 145,887.68 × 57,967.72
  4. Step 4: Simplify right side
    105,712.66x = 8,456,775,965.89
  5. Step 5: Solve for x
    x = 8,456,775,965.89/105,712.66
  6. Step 6: Final answer
    x = 79,997.76

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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.