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Finding the Fourth Proportional to 81,627.84, 112,646.08 and 47,659.68

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Solution

The fourth proportional to 81,627.84, 112,646.08 and 47,659.68 is: 65,770.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,627.84 : 112,646.08 = 47,659.68 : x
  2. Step 2: Convert to fraction form
    81,627.84/112,646.08 = 47,659.68/x
  3. Step 3: Cross multiply
    81,627.84x = 112,646.08 × 47,659.68
  4. Step 4: Simplify right side
    81,627.84x = 5,368,676,126.05
  5. Step 5: Solve for x
    x = 5,368,676,126.05/81,627.84
  6. Step 6: Final answer
    x = 65,770.16

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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.