Home / 105,345.78-145,390.86-60,039.96

Finding the Fourth Proportional to 105,345.78, 145,390.86 and 60,039.96

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Solution

The fourth proportional to 105,345.78, 145,390.86 and 60,039.96 is: 82,862.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,345.78 : 145,390.86 = 60,039.96 : x
  2. Step 2: Convert to fraction form
    105,345.78/145,390.86 = 60,039.96/x
  3. Step 3: Cross multiply
    105,345.78x = 145,390.86 × 60,039.96
  4. Step 4: Simplify right side
    105,345.78x = 8,729,261,418.77
  5. Step 5: Solve for x
    x = 8,729,261,418.77/105,345.78
  6. Step 6: Final answer
    x = 82,862.94

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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.