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Finding the Fourth Proportional to 84,020.79, 126,083.74 and 34,100.89

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Solution

The fourth proportional to 84,020.79, 126,083.74 and 34,100.89 is: 51,172.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,020.79 : 126,083.74 = 34,100.89 : x
  2. Step 2: Convert to fraction form
    84,020.79/126,083.74 = 34,100.89/x
  3. Step 3: Cross multiply
    84,020.79x = 126,083.74 × 34,100.89
  4. Step 4: Simplify right side
    84,020.79x = 4,299,566,947.61
  5. Step 5: Solve for x
    x = 4,299,566,947.61/84,020.79
  6. Step 6: Final answer
    x = 51,172.66

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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.