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Finding the Fourth Proportional to 85,118.50, 117,465.69 and 47,391.94

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Solution

The fourth proportional to 85,118.50, 117,465.69 and 47,391.94 is: 65,402.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,118.50 : 117,465.69 = 47,391.94 : x
  2. Step 2: Convert to fraction form
    85,118.50/117,465.69 = 47,391.94/x
  3. Step 3: Cross multiply
    85,118.50x = 117,465.69 × 47,391.94
  4. Step 4: Simplify right side
    85,118.50x = 5,566,926,932.54
  5. Step 5: Solve for x
    x = 5,566,926,932.54/85,118.50
  6. Step 6: Final answer
    x = 65,402.08

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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.