Home / 105,366.96-145,407.55-57,619.28

Finding the Fourth Proportional to 105,366.96, 145,407.55 and 57,619.28

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Solution

The fourth proportional to 105,366.96, 145,407.55 and 57,619.28 is: 79,515.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,366.96 : 145,407.55 = 57,619.28 : x
  2. Step 2: Convert to fraction form
    105,366.96/145,407.55 = 57,619.28/x
  3. Step 3: Cross multiply
    105,366.96x = 145,407.55 × 57,619.28
  4. Step 4: Simplify right side
    105,366.96x = 8,378,278,337.56
  5. Step 5: Solve for x
    x = 8,378,278,337.56/105,366.96
  6. Step 6: Final answer
    x = 79,515.23

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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.