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Finding the Fourth Proportional to 84,303.27, 126,451.92 and 21,123.91

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Solution

The fourth proportional to 84,303.27, 126,451.92 and 21,123.91 is: 31,685.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,303.27 : 126,451.92 = 21,123.91 : x
  2. Step 2: Convert to fraction form
    84,303.27/126,451.92 = 21,123.91/x
  3. Step 3: Cross multiply
    84,303.27x = 126,451.92 × 21,123.91
  4. Step 4: Simplify right side
    84,303.27x = 2,671,158,977.41
  5. Step 5: Solve for x
    x = 2,671,158,977.41/84,303.27
  6. Step 6: Final answer
    x = 31,685.12

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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.