Home / 91,455.53-126,209.18-51,169.28

Finding the Fourth Proportional to 91,455.53, 126,209.18 and 51,169.28

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Solution

The fourth proportional to 91,455.53, 126,209.18 and 51,169.28 is: 70,613.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,455.53 : 126,209.18 = 51,169.28 : x
  2. Step 2: Convert to fraction form
    91,455.53/126,209.18 = 51,169.28/x
  3. Step 3: Cross multiply
    91,455.53x = 126,209.18 × 51,169.28
  4. Step 4: Simplify right side
    91,455.53x = 6,458,032,366.87
  5. Step 5: Solve for x
    x = 6,458,032,366.87/91,455.53
  6. Step 6: Final answer
    x = 70,613.91

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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.