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Finding the Fourth Proportional to 52,285.70, 72,154.94 and 28,412.78

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Solution

The fourth proportional to 52,285.70, 72,154.94 and 28,412.78 is: 39,209.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,285.70 : 72,154.94 = 28,412.78 : x
  2. Step 2: Convert to fraction form
    52,285.70/72,154.94 = 28,412.78/x
  3. Step 3: Cross multiply
    52,285.70x = 72,154.94 × 28,412.78
  4. Step 4: Simplify right side
    52,285.70x = 2,050,121,933.29
  5. Step 5: Solve for x
    x = 2,050,121,933.29/52,285.70
  6. Step 6: Final answer
    x = 39,209.99

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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.