Home / 105,561.91-145,669.98-57,806.04

Finding the Fourth Proportional to 105,561.91, 145,669.98 and 57,806.04

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Solution

The fourth proportional to 105,561.91, 145,669.98 and 57,806.04 is: 79,769.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,561.91 : 145,669.98 = 57,806.04 : x
  2. Step 2: Convert to fraction form
    105,561.91/145,669.98 = 57,806.04/x
  3. Step 3: Cross multiply
    105,561.91x = 145,669.98 × 57,806.04
  4. Step 4: Simplify right side
    105,561.91x = 8,420,604,690.68
  5. Step 5: Solve for x
    x = 8,420,604,690.68/105,561.91
  6. Step 6: Final answer
    x = 79,769.35

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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.