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Finding the Fourth Proportional to 85,141.49, 117,481.19 and 51,607.49

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Solution

The fourth proportional to 85,141.49, 117,481.19 and 51,607.49 is: 71,209.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,141.49 : 117,481.19 = 51,607.49 : x
  2. Step 2: Convert to fraction form
    85,141.49/117,481.19 = 51,607.49/x
  3. Step 3: Cross multiply
    85,141.49x = 117,481.19 × 51,607.49
  4. Step 4: Simplify right side
    85,141.49x = 6,062,908,492.67
  5. Step 5: Solve for x
    x = 6,062,908,492.67/85,141.49
  6. Step 6: Final answer
    x = 71,209.80

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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.