Home / 105,584.87-145,707.06-57,838.20

Finding the Fourth Proportional to 105,584.87, 145,707.06 and 57,838.20

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Solution

The fourth proportional to 105,584.87, 145,707.06 and 57,838.20 is: 79,816.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,584.87 : 145,707.06 = 57,838.20 : x
  2. Step 2: Convert to fraction form
    105,584.87/145,707.06 = 57,838.20/x
  3. Step 3: Cross multiply
    105,584.87x = 145,707.06 × 57,838.20
  4. Step 4: Simplify right side
    105,584.87x = 8,427,434,077.69
  5. Step 5: Solve for x
    x = 8,427,434,077.69/105,584.87
  6. Step 6: Final answer
    x = 79,816.69

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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.