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Finding the Fourth Proportional to 89,375.70, 134,017.70 and 47,278.50

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Solution

The fourth proportional to 89,375.70, 134,017.70 and 47,278.50 is: 70,893.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,375.70 : 134,017.70 = 47,278.50 : x
  2. Step 2: Convert to fraction form
    89,375.70/134,017.70 = 47,278.50/x
  3. Step 3: Cross multiply
    89,375.70x = 134,017.70 × 47,278.50
  4. Step 4: Simplify right side
    89,375.70x = 6,336,155,829.45
  5. Step 5: Solve for x
    x = 6,336,155,829.45/89,375.70
  6. Step 6: Final answer
    x = 70,893.50

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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.