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Finding the Fourth Proportional to 85,456.92, 117,907.74 and 47,730.36

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Solution

The fourth proportional to 85,456.92, 117,907.74 and 47,730.36 is: 65,855.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,456.92 : 117,907.74 = 47,730.36 : x
  2. Step 2: Convert to fraction form
    85,456.92/117,907.74 = 47,730.36/x
  3. Step 3: Cross multiply
    85,456.92x = 117,907.74 × 47,730.36
  4. Step 4: Simplify right side
    85,456.92x = 5,627,778,876.99
  5. Step 5: Solve for x
    x = 5,627,778,876.99/85,456.92
  6. Step 6: Final answer
    x = 65,855.16

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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.