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Finding the Fourth Proportional to 91,498.49, 126,267.90 and 51,212.25

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Solution

The fourth proportional to 91,498.49, 126,267.90 and 51,212.25 is: 70,672.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,498.49 : 126,267.90 = 51,212.25 : x
  2. Step 2: Convert to fraction form
    91,498.49/126,267.90 = 51,212.25/x
  3. Step 3: Cross multiply
    91,498.49x = 126,267.90 × 51,212.25
  4. Step 4: Simplify right side
    91,498.49x = 6,466,463,069.73
  5. Step 5: Solve for x
    x = 6,466,463,069.73/91,498.49
  6. Step 6: Final answer
    x = 70,672.89

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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.