Home / 91,801.60-126,685.86-51,515.28

Finding the Fourth Proportional to 91,801.60, 126,685.86 and 51,515.28

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Solution

The fourth proportional to 91,801.60, 126,685.86 and 51,515.28 is: 71,090.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,801.60 : 126,685.86 = 51,515.28 : x
  2. Step 2: Convert to fraction form
    91,801.60/126,685.86 = 51,515.28/x
  3. Step 3: Cross multiply
    91,801.60x = 126,685.86 × 51,515.28
  4. Step 4: Simplify right side
    91,801.60x = 6,526,257,549.94
  5. Step 5: Solve for x
    x = 6,526,257,549.94/91,801.60
  6. Step 6: Final answer
    x = 71,090.89

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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.