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Finding the Fourth Proportional to 85,483.12, 117,966.48 and 49,188.64

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Solution

The fourth proportional to 85,483.12, 117,966.48 and 49,188.64 is: 67,880.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,483.12 : 117,966.48 = 49,188.64 : x
  2. Step 2: Convert to fraction form
    85,483.12/117,966.48 = 49,188.64/x
  3. Step 3: Cross multiply
    85,483.12x = 117,966.48 × 49,188.64
  4. Step 4: Simplify right side
    85,483.12x = 5,802,610,716.79
  5. Step 5: Solve for x
    x = 5,802,610,716.79/85,483.12
  6. Step 6: Final answer
    x = 67,880.19

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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.