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Finding the Fourth Proportional to 91,612.34, 126,416.53 and 51,868.34

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Solution

The fourth proportional to 91,612.34, 126,416.53 and 51,868.34 is: 71,573.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,612.34 : 126,416.53 = 51,868.34 : x
  2. Step 2: Convert to fraction form
    91,612.34/126,416.53 = 51,868.34/x
  3. Step 3: Cross multiply
    91,612.34x = 126,416.53 × 51,868.34
  4. Step 4: Simplify right side
    91,612.34x = 6,557,015,559.66
  5. Step 5: Solve for x
    x = 6,557,015,559.66/91,612.34
  6. Step 6: Final answer
    x = 71,573.50

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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.