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Finding the Fourth Proportional to 49,416.80, 74,134.80 and 21,336.80

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Solution

The fourth proportional to 49,416.80, 74,134.80 and 21,336.80 is: 32,009.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,416.80 : 74,134.80 = 21,336.80 : x
  2. Step 2: Convert to fraction form
    49,416.80/74,134.80 = 21,336.80/x
  3. Step 3: Cross multiply
    49,416.80x = 74,134.80 × 21,336.80
  4. Step 4: Simplify right side
    49,416.80x = 1,581,799,400.64
  5. Step 5: Solve for x
    x = 1,581,799,400.64/49,416.80
  6. Step 6: Final answer
    x = 32,009.35

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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.