Home / 105,532.92-145,635.67-57,135.36

Finding the Fourth Proportional to 105,532.92, 145,635.67 and 57,135.36

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Solution

The fourth proportional to 105,532.92, 145,635.67 and 57,135.36 is: 78,846.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,532.92 : 145,635.67 = 57,135.36 : x
  2. Step 2: Convert to fraction form
    105,532.92/145,635.67 = 57,135.36/x
  3. Step 3: Cross multiply
    105,532.92x = 145,635.67 × 57,135.36
  4. Step 4: Simplify right side
    105,532.92x = 8,320,946,434.29
  5. Step 5: Solve for x
    x = 8,320,946,434.29/105,532.92
  6. Step 6: Final answer
    x = 78,846.93

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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.