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Finding the Fourth Proportional to 71,287.89, 98,370.55 and 42,601.84

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Solution

The fourth proportional to 71,287.89, 98,370.55 and 42,601.84 is: 58,786.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,287.89 : 98,370.55 = 42,601.84 : x
  2. Step 2: Convert to fraction form
    71,287.89/98,370.55 = 42,601.84/x
  3. Step 3: Cross multiply
    71,287.89x = 98,370.55 × 42,601.84
  4. Step 4: Simplify right side
    71,287.89x = 4,190,766,431.81
  5. Step 5: Solve for x
    x = 4,190,766,431.81/71,287.89
  6. Step 6: Final answer
    x = 58,786.51

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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.