Home / 91,866.55-126,768.09-55,581.52

Finding the Fourth Proportional to 91,866.55, 126,768.09 and 55,581.52

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Solution

The fourth proportional to 91,866.55, 126,768.09 and 55,581.52 is: 76,697.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,866.55 : 126,768.09 = 55,581.52 : x
  2. Step 2: Convert to fraction form
    91,866.55/126,768.09 = 55,581.52/x
  3. Step 3: Cross multiply
    91,866.55x = 126,768.09 × 55,581.52
  4. Step 4: Simplify right side
    91,866.55x = 7,045,963,129.70
  5. Step 5: Solve for x
    x = 7,045,963,129.70/91,866.55
  6. Step 6: Final answer
    x = 76,697.81

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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.