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Finding the Fourth Proportional to 44,285.40, 66,428.10 and 20,957.40

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Solution

The fourth proportional to 44,285.40, 66,428.10 and 20,957.40 is: 31,436.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,285.40 : 66,428.10 = 20,957.40 : x
  2. Step 2: Convert to fraction form
    44,285.40/66,428.10 = 20,957.40/x
  3. Step 3: Cross multiply
    44,285.40x = 66,428.10 × 20,957.40
  4. Step 4: Simplify right side
    44,285.40x = 1,392,160,262.94
  5. Step 5: Solve for x
    x = 1,392,160,262.94/44,285.40
  6. Step 6: Final answer
    x = 31,436.10

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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.