Home / 91,420.81-126,167.31-51,147.52

Finding the Fourth Proportional to 91,420.81, 126,167.31 and 51,147.52

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Solution

The fourth proportional to 91,420.81, 126,167.31 and 51,147.52 is: 70,587.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,420.81 : 126,167.31 = 51,147.52 : x
  2. Step 2: Convert to fraction form
    91,420.81/126,167.31 = 51,147.52/x
  3. Step 3: Cross multiply
    91,420.81x = 126,167.31 × 51,147.52
  4. Step 4: Simplify right side
    91,420.81x = 6,453,145,011.57
  5. Step 5: Solve for x
    x = 6,453,145,011.57/91,420.81
  6. Step 6: Final answer
    x = 70,587.27

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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.