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Finding the Fourth Proportional to 52,631.70, 72,628.65 and 28,753.62

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Solution

The fourth proportional to 52,631.70, 72,628.65 and 28,753.62 is: 39,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,631.70 : 72,628.65 = 28,753.62 : x
  2. Step 2: Convert to fraction form
    52,631.70/72,628.65 = 28,753.62/x
  3. Step 3: Cross multiply
    52,631.70x = 72,628.65 × 28,753.62
  4. Step 4: Simplify right side
    52,631.70x = 2,088,336,603.21
  5. Step 5: Solve for x
    x = 2,088,336,603.21/52,631.70
  6. Step 6: Final answer
    x = 39,678.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.