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Finding the Fourth Proportional to 86,751.32, 119,715.84 and 47,007.32

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Solution

The fourth proportional to 86,751.32, 119,715.84 and 47,007.32 is: 64,869.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,751.32 : 119,715.84 = 47,007.32 : x
  2. Step 2: Convert to fraction form
    86,751.32/119,715.84 = 47,007.32/x
  3. Step 3: Cross multiply
    86,751.32x = 119,715.84 × 47,007.32
  4. Step 4: Simplify right side
    86,751.32x = 5,627,520,799.95
  5. Step 5: Solve for x
    x = 5,627,520,799.95/86,751.32
  6. Step 6: Final answer
    x = 64,869.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.