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Finding the Fourth Proportional to 91,387.80, 126,114.30 and 51,101.10

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Solution

The fourth proportional to 91,387.80, 126,114.30 and 51,101.10 is: 70,519.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,387.80 : 126,114.30 = 51,101.10 : x
  2. Step 2: Convert to fraction form
    91,387.80/126,114.30 = 51,101.10/x
  3. Step 3: Cross multiply
    91,387.80x = 126,114.30 × 51,101.10
  4. Step 4: Simplify right side
    91,387.80x = 6,444,579,455.73
  5. Step 5: Solve for x
    x = 6,444,579,455.73/91,387.80
  6. Step 6: Final answer
    x = 70,519.03

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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.