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Finding the Fourth Proportional to 91,299.61, 125,991.10 and 51,013.67

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Solution

The fourth proportional to 91,299.61, 125,991.10 and 51,013.67 is: 70,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,299.61 : 125,991.10 = 51,013.67 : x
  2. Step 2: Convert to fraction form
    91,299.61/125,991.10 = 51,013.67/x
  3. Step 3: Cross multiply
    91,299.61x = 125,991.10 × 51,013.67
  4. Step 4: Simplify right side
    91,299.61x = 6,427,268,608.25
  5. Step 5: Solve for x
    x = 6,427,268,608.25/91,299.61
  6. Step 6: Final answer
    x = 70,397.55

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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.