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Finding the Fourth Proportional to 85,366.58, 117,805.76 and 47,640.82

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Solution

The fourth proportional to 85,366.58, 117,805.76 and 47,640.82 is: 65,744.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,366.58 : 117,805.76 = 47,640.82 : x
  2. Step 2: Convert to fraction form
    85,366.58/117,805.76 = 47,640.82/x
  3. Step 3: Cross multiply
    85,366.58x = 117,805.76 × 47,640.82
  4. Step 4: Simplify right side
    85,366.58x = 5,612,363,007.12
  5. Step 5: Solve for x
    x = 5,612,363,007.12/85,366.58
  6. Step 6: Final answer
    x = 65,744.26

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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.