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Finding the Fourth Proportional to 47,307.39, 70,943.72 and 15,711.72

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Solution

The fourth proportional to 47,307.39, 70,943.72 and 15,711.72 is: 23,561.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,307.39 : 70,943.72 = 15,711.72 : x
  2. Step 2: Convert to fraction form
    47,307.39/70,943.72 = 15,711.72/x
  3. Step 3: Cross multiply
    47,307.39x = 70,943.72 × 15,711.72
  4. Step 4: Simplify right side
    47,307.39x = 1,114,647,785.84
  5. Step 5: Solve for x
    x = 1,114,647,785.84/47,307.39
  6. Step 6: Final answer
    x = 23,561.81

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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.