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Finding the Fourth Proportional to 87,295, 120,461.43 and 51,476.80

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Solution

The fourth proportional to 87,295, 120,461.43 and 51,476.80 is: 71,034.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,295 : 120,461.43 = 51,476.80 : x
  2. Step 2: Convert to fraction form
    87,295/120,461.43 = 51,476.80/x
  3. Step 3: Cross multiply
    87,295x = 120,461.43 × 51,476.80
  4. Step 4: Simplify right side
    87,295x = 6,200,968,939.82
  5. Step 5: Solve for x
    x = 6,200,968,939.82/87,295
  6. Step 6: Final answer
    x = 71,034.64

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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.