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Finding the Fourth Proportional to 47,135.88, 70,688.88 and 15,963.84

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Solution

The fourth proportional to 47,135.88, 70,688.88 and 15,963.84 is: 23,940.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,135.88 : 70,688.88 = 15,963.84 : x
  2. Step 2: Convert to fraction form
    47,135.88/70,688.88 = 15,963.84/x
  3. Step 3: Cross multiply
    47,135.88x = 70,688.88 × 15,963.84
  4. Step 4: Simplify right side
    47,135.88x = 1,128,465,970.10
  5. Step 5: Solve for x
    x = 1,128,465,970.10/47,135.88
  6. Step 6: Final answer
    x = 23,940.70

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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.