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Finding the Fourth Proportional to 84,029.70, 126,044.55 and 65,002.80

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Solution

The fourth proportional to 84,029.70, 126,044.55 and 65,002.80 is: 97,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,029.70 : 126,044.55 = 65,002.80 : x
  2. Step 2: Convert to fraction form
    84,029.70/126,044.55 = 65,002.80/x
  3. Step 3: Cross multiply
    84,029.70x = 126,044.55 × 65,002.80
  4. Step 4: Simplify right side
    84,029.70x = 8,193,248,674.74
  5. Step 5: Solve for x
    x = 8,193,248,674.74/84,029.70
  6. Step 6: Final answer
    x = 97,504.20

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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.