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Finding the Fourth Proportional to 91,885.78, 126,802.38 and 51,599.57

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Solution

The fourth proportional to 91,885.78, 126,802.38 and 51,599.57 is: 71,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,885.78 : 126,802.38 = 51,599.57 : x
  2. Step 2: Convert to fraction form
    91,885.78/126,802.38 = 51,599.57/x
  3. Step 3: Cross multiply
    91,885.78x = 126,802.38 × 51,599.57
  4. Step 4: Simplify right side
    91,885.78x = 6,542,947,648.96
  5. Step 5: Solve for x
    x = 6,542,947,648.96/91,885.78
  6. Step 6: Final answer
    x = 71,207.40

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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.