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Finding the Fourth Proportional to 86,397.89, 129,614.45 and 48,974.67

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Solution

The fourth proportional to 86,397.89, 129,614.45 and 48,974.67 is: 73,471.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,397.89 : 129,614.45 = 48,974.67 : x
  2. Step 2: Convert to fraction form
    86,397.89/129,614.45 = 48,974.67/x
  3. Step 3: Cross multiply
    86,397.89x = 129,614.45 × 48,974.67
  4. Step 4: Simplify right side
    86,397.89x = 6,347,824,915.98
  5. Step 5: Solve for x
    x = 6,347,824,915.98/86,397.89
  6. Step 6: Final answer
    x = 73,471.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.