Home / 91,967.85-126,918.16-51,685.28

Finding the Fourth Proportional to 91,967.85, 126,918.16 and 51,685.28

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Solution

The fourth proportional to 91,967.85, 126,918.16 and 51,685.28 is: 71,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,967.85 : 126,918.16 = 51,685.28 : x
  2. Step 2: Convert to fraction form
    91,967.85/126,918.16 = 51,685.28/x
  3. Step 3: Cross multiply
    91,967.85x = 126,918.16 × 51,685.28
  4. Step 4: Simplify right side
    91,967.85x = 6,559,800,378.26
  5. Step 5: Solve for x
    x = 6,559,800,378.26/91,967.85
  6. Step 6: Final answer
    x = 71,327.11

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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.