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Finding the Fourth Proportional to 85,363.68, 117,823.02 and 51,857.76

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Solution

The fourth proportional to 85,363.68, 117,823.02 and 51,857.76 is: 71,576.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,363.68 : 117,823.02 = 51,857.76 : x
  2. Step 2: Convert to fraction form
    85,363.68/117,823.02 = 51,857.76/x
  3. Step 3: Cross multiply
    85,363.68x = 117,823.02 × 51,857.76
  4. Step 4: Simplify right side
    85,363.68x = 6,110,037,893.64
  5. Step 5: Solve for x
    x = 6,110,037,893.64/85,363.68
  6. Step 6: Final answer
    x = 71,576.55

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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.