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Finding the Fourth Proportional to 91,987.38, 126,936.77 and 51,700.59

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Solution

The fourth proportional to 91,987.38, 126,936.77 and 51,700.59 is: 71,343.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,987.38 : 126,936.77 = 51,700.59 : x
  2. Step 2: Convert to fraction form
    91,987.38/126,936.77 = 51,700.59/x
  3. Step 3: Cross multiply
    91,987.38x = 126,936.77 × 51,700.59
  4. Step 4: Simplify right side
    91,987.38x = 6,562,705,643.19
  5. Step 5: Solve for x
    x = 6,562,705,643.19/91,987.38
  6. Step 6: Final answer
    x = 71,343.54

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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.