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Finding the Fourth Proportional to 84,602.50, 126,905.79 and 28,443.34

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Solution

The fourth proportional to 84,602.50, 126,905.79 and 28,443.34 is: 42,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,602.50 : 126,905.79 = 28,443.34 : x
  2. Step 2: Convert to fraction form
    84,602.50/126,905.79 = 28,443.34/x
  3. Step 3: Cross multiply
    84,602.50x = 126,905.79 × 28,443.34
  4. Step 4: Simplify right side
    84,602.50x = 3,609,624,532.94
  5. Step 5: Solve for x
    x = 3,609,624,532.94/84,602.50
  6. Step 6: Final answer
    x = 42,665.70

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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.