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Finding the Fourth Proportional to 85,363.32, 117,809.22 and 47,129.70

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Solution

The fourth proportional to 85,363.32, 117,809.22 and 47,129.70 is: 65,043.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,363.32 : 117,809.22 = 47,129.70 : x
  2. Step 2: Convert to fraction form
    85,363.32/117,809.22 = 47,129.70/x
  3. Step 3: Cross multiply
    85,363.32x = 117,809.22 × 47,129.70
  4. Step 4: Simplify right side
    85,363.32x = 5,552,313,195.83
  5. Step 5: Solve for x
    x = 5,552,313,195.83/85,363.32
  6. Step 6: Final answer
    x = 65,043.31

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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.