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Finding the Fourth Proportional to 51,620.62, 77,478.45 and 31,937.62

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Solution

The fourth proportional to 51,620.62, 77,478.45 and 31,937.62 is: 47,935.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,620.62 : 77,478.45 = 31,937.62 : x
  2. Step 2: Convert to fraction form
    51,620.62/77,478.45 = 31,937.62/x
  3. Step 3: Cross multiply
    51,620.62x = 77,478.45 × 31,937.62
  4. Step 4: Simplify right side
    51,620.62x = 2,474,477,294.29
  5. Step 5: Solve for x
    x = 2,474,477,294.29/51,620.62
  6. Step 6: Final answer
    x = 47,935.83

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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.