Home / 91,720.71-126,520.95-57,675.30

Finding the Fourth Proportional to 91,720.71, 126,520.95 and 57,675.30

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Solution

The fourth proportional to 91,720.71, 126,520.95 and 57,675.30 is: 79,558.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,720.71 : 126,520.95 = 57,675.30 : x
  2. Step 2: Convert to fraction form
    91,720.71/126,520.95 = 57,675.30/x
  3. Step 3: Cross multiply
    91,720.71x = 126,520.95 × 57,675.30
  4. Step 4: Simplify right side
    91,720.71x = 7,297,133,747.54
  5. Step 5: Solve for x
    x = 7,297,133,747.54/91,720.71
  6. Step 6: Final answer
    x = 79,558.19

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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.