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Finding the Fourth Proportional to 84,781.80, 127,172.70 and 29,383.40

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Solution

The fourth proportional to 84,781.80, 127,172.70 and 29,383.40 is: 44,075.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,781.80 : 127,172.70 = 29,383.40 : x
  2. Step 2: Convert to fraction form
    84,781.80/127,172.70 = 29,383.40/x
  3. Step 3: Cross multiply
    84,781.80x = 127,172.70 × 29,383.40
  4. Step 4: Simplify right side
    84,781.80x = 3,736,766,313.18
  5. Step 5: Solve for x
    x = 3,736,766,313.18/84,781.80
  6. Step 6: Final answer
    x = 44,075.10

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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.