Home / 105,685.92-145,855.77-57,948.57

Finding the Fourth Proportional to 105,685.92, 145,855.77 and 57,948.57

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Solution

The fourth proportional to 105,685.92, 145,855.77 and 57,948.57 is: 79,974.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,685.92 : 145,855.77 = 57,948.57 : x
  2. Step 2: Convert to fraction form
    105,685.92/145,855.77 = 57,948.57/x
  3. Step 3: Cross multiply
    105,685.92x = 145,855.77 × 57,948.57
  4. Step 4: Simplify right side
    105,685.92x = 8,452,133,297.75
  5. Step 5: Solve for x
    x = 8,452,133,297.75/105,685.92
  6. Step 6: Final answer
    x = 79,974.07

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1.5x scale

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.