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Finding the Fourth Proportional to 91,575, 126,371.88 and 51,288.36

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Solution

The fourth proportional to 91,575, 126,371.88 and 51,288.36 is: 70,777.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,575 : 126,371.88 = 51,288.36 : x
  2. Step 2: Convert to fraction form
    91,575/126,371.88 = 51,288.36/x
  3. Step 3: Cross multiply
    91,575x = 126,371.88 × 51,288.36
  4. Step 4: Simplify right side
    91,575x = 6,481,406,475.32
  5. Step 5: Solve for x
    x = 6,481,406,475.32/91,575
  6. Step 6: Final answer
    x = 70,777.03

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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.