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Finding the Fourth Proportional to 91,374, 126,096.12 and 51,630

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Solution

The fourth proportional to 91,374, 126,096.12 and 51,630 is: 71,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,374 : 126,096.12 = 51,630 : x
  2. Step 2: Convert to fraction form
    91,374/126,096.12 = 51,630/x
  3. Step 3: Cross multiply
    91,374x = 126,096.12 × 51,630
  4. Step 4: Simplify right side
    91,374x = 6,510,342,675.60
  5. Step 5: Solve for x
    x = 6,510,342,675.60/91,374
  6. Step 6: Final answer
    x = 71,249.40

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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.