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Finding the Fourth Proportional to 91,171.98, 125,815.68 and 50,885.01

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Solution

The fourth proportional to 91,171.98, 125,815.68 and 50,885.01 is: 70,220.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,171.98 : 125,815.68 = 50,885.01 : x
  2. Step 2: Convert to fraction form
    91,171.98/125,815.68 = 50,885.01/x
  3. Step 3: Cross multiply
    91,171.98x = 125,815.68 × 50,885.01
  4. Step 4: Simplify right side
    91,171.98x = 6,402,132,134.96
  5. Step 5: Solve for x
    x = 6,402,132,134.96/91,171.98
  6. Step 6: Final answer
    x = 70,220.39

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1.5x scale

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.