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Finding the Fourth Proportional to 85,501.69, 117,992.09 and 47,775.97

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Solution

The fourth proportional to 85,501.69, 117,992.09 and 47,775.97 is: 65,930.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,501.69 : 117,992.09 = 47,775.97 : x
  2. Step 2: Convert to fraction form
    85,501.69/117,992.09 = 47,775.97/x
  3. Step 3: Cross multiply
    85,501.69x = 117,992.09 × 47,775.97
  4. Step 4: Simplify right side
    85,501.69x = 5,637,186,313.20
  5. Step 5: Solve for x
    x = 5,637,186,313.20/85,501.69
  6. Step 6: Final answer
    x = 65,930.70

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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.