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Finding the Fourth Proportional to 51,990.60, 77,938.02 and 16,912.20

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Solution

The fourth proportional to 51,990.60, 77,938.02 and 16,912.20 is: 25,352.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,990.60 : 77,938.02 = 16,912.20 : x
  2. Step 2: Convert to fraction form
    51,990.60/77,938.02 = 16,912.20/x
  3. Step 3: Cross multiply
    51,990.60x = 77,938.02 × 16,912.20
  4. Step 4: Simplify right side
    51,990.60x = 1,318,103,381.84
  5. Step 5: Solve for x
    x = 1,318,103,381.84/51,990.60
  6. Step 6: Final answer
    x = 25,352.72

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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.