Home / 105,572.57-145,690.19-57,826.71

Finding the Fourth Proportional to 105,572.57, 145,690.19 and 57,826.71

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Solution

The fourth proportional to 105,572.57, 145,690.19 and 57,826.71 is: 79,800.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,572.57 : 145,690.19 = 57,826.71 : x
  2. Step 2: Convert to fraction form
    105,572.57/145,690.19 = 57,826.71/x
  3. Step 3: Cross multiply
    105,572.57x = 145,690.19 × 57,826.71
  4. Step 4: Simplify right side
    105,572.57x = 8,424,784,077.84
  5. Step 5: Solve for x
    x = 8,424,784,077.84/105,572.57
  6. Step 6: Final answer
    x = 79,800.88

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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.