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Finding the Fourth Proportional to 85,996.98, 128,973.60 and 33,377.76

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Solution

The fourth proportional to 85,996.98, 128,973.60 and 33,377.76 is: 50,058.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,996.98 : 128,973.60 = 33,377.76 : x
  2. Step 2: Convert to fraction form
    85,996.98/128,973.60 = 33,377.76/x
  3. Step 3: Cross multiply
    85,996.98x = 128,973.60 × 33,377.76
  4. Step 4: Simplify right side
    85,996.98x = 4,304,849,867.14
  5. Step 5: Solve for x
    x = 4,304,849,867.14/85,996.98
  6. Step 6: Final answer
    x = 50,058.15

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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.