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Finding the Fourth Proportional to 85,880.63, 118,515.16 and 47,645.98

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Solution

The fourth proportional to 85,880.63, 118,515.16 and 47,645.98 is: 65,751.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,880.63 : 118,515.16 = 47,645.98 : x
  2. Step 2: Convert to fraction form
    85,880.63/118,515.16 = 47,645.98/x
  3. Step 3: Cross multiply
    85,880.63x = 118,515.16 × 47,645.98
  4. Step 4: Simplify right side
    85,880.63x = 5,646,770,350.48
  5. Step 5: Solve for x
    x = 5,646,770,350.48/85,880.63
  6. Step 6: Final answer
    x = 65,751.38

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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.