Home / 105,584.13-145,706.14-57,839.20

Finding the Fourth Proportional to 105,584.13, 145,706.14 and 57,839.20

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Solution

The fourth proportional to 105,584.13, 145,706.14 and 57,839.20 is: 79,818.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,584.13 : 145,706.14 = 57,839.20 : x
  2. Step 2: Convert to fraction form
    105,584.13/145,706.14 = 57,839.20/x
  3. Step 3: Cross multiply
    105,584.13x = 145,706.14 × 57,839.20
  4. Step 4: Simplify right side
    105,584.13x = 8,427,526,572.69
  5. Step 5: Solve for x
    x = 8,427,526,572.69/105,584.13
  6. Step 6: Final answer
    x = 79,818.12

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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.