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Finding the Fourth Proportional to 85,743.43, 118,326.76 and 47,503.78

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Solution

The fourth proportional to 85,743.43, 118,326.76 and 47,503.78 is: 65,555.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,743.43 : 118,326.76 = 47,503.78 : x
  2. Step 2: Convert to fraction form
    85,743.43/118,326.76 = 47,503.78/x
  3. Step 3: Cross multiply
    85,743.43x = 118,326.76 × 47,503.78
  4. Step 4: Simplify right side
    85,743.43x = 5,620,967,960.58
  5. Step 5: Solve for x
    x = 5,620,967,960.58/85,743.43
  6. Step 6: Final answer
    x = 65,555.67

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1.5x scale

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.