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Finding the Fourth Proportional to 85,270.99, 117,684.87 and 70,906.11

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Solution

The fourth proportional to 85,270.99, 117,684.87 and 70,906.11 is: 97,859.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,270.99 : 117,684.87 = 70,906.11 : x
  2. Step 2: Convert to fraction form
    85,270.99/117,684.87 = 70,906.11/x
  3. Step 3: Cross multiply
    85,270.99x = 117,684.87 × 70,906.11
  4. Step 4: Simplify right side
    85,270.99x = 8,344,575,394.60
  5. Step 5: Solve for x
    x = 8,344,575,394.60/85,270.99
  6. Step 6: Final answer
    x = 97,859.49

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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.