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Finding the Fourth Proportional to 85,894.50, 128,839.65 and 33,304.01

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Solution

The fourth proportional to 85,894.50, 128,839.65 and 33,304.01 is: 49,955.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,894.50 : 128,839.65 = 33,304.01 : x
  2. Step 2: Convert to fraction form
    85,894.50/128,839.65 = 33,304.01/x
  3. Step 3: Cross multiply
    85,894.50x = 128,839.65 × 33,304.01
  4. Step 4: Simplify right side
    85,894.50x = 4,290,876,222.91
  5. Step 5: Solve for x
    x = 4,290,876,222.91/85,894.50
  6. Step 6: Final answer
    x = 49,955.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.