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Finding the Fourth Proportional to 86,093.84, 118,823.60 and 71,730.89

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Solution

The fourth proportional to 86,093.84, 118,823.60 and 71,730.89 is: 99,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,093.84 : 118,823.60 = 71,730.89 : x
  2. Step 2: Convert to fraction form
    86,093.84/118,823.60 = 71,730.89/x
  3. Step 3: Cross multiply
    86,093.84x = 118,823.60 × 71,730.89
  4. Step 4: Simplify right side
    86,093.84x = 8,523,322,581.00
  5. Step 5: Solve for x
    x = 8,523,322,581.00/86,093.84
  6. Step 6: Final answer
    x = 99,000.38

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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.