Home / 91,501.34-126,270.61-51,215.09

Finding the Fourth Proportional to 91,501.34, 126,270.61 and 51,215.09

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Solution

The fourth proportional to 91,501.34, 126,270.61 and 51,215.09 is: 70,676.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,501.34 : 126,270.61 = 51,215.09 : x
  2. Step 2: Convert to fraction form
    91,501.34/126,270.61 = 51,215.09/x
  3. Step 3: Cross multiply
    91,501.34x = 126,270.61 × 51,215.09
  4. Step 4: Simplify right side
    91,501.34x = 6,466,960,655.50
  5. Step 5: Solve for x
    x = 6,466,960,655.50/91,501.34
  6. Step 6: Final answer
    x = 70,676.13

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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.