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Finding the Fourth Proportional to 91,361.48, 126,079.78 and 51,077.48

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Solution

The fourth proportional to 91,361.48, 126,079.78 and 51,077.48 is: 70,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,361.48 : 126,079.78 = 51,077.48 : x
  2. Step 2: Convert to fraction form
    91,361.48/126,079.78 = 51,077.48/x
  3. Step 3: Cross multiply
    91,361.48x = 126,079.78 × 51,077.48
  4. Step 4: Simplify right side
    91,361.48x = 6,439,837,441.35
  5. Step 5: Solve for x
    x = 6,439,837,441.35/91,361.48
  6. Step 6: Final answer
    x = 70,487.45

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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.