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Finding the Fourth Proportional to 49,641.60, 74,436.80 and 18,460.80

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Solution

The fourth proportional to 49,641.60, 74,436.80 and 18,460.80 is: 27,681.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,641.60 : 74,436.80 = 18,460.80 : x
  2. Step 2: Convert to fraction form
    49,641.60/74,436.80 = 18,460.80/x
  3. Step 3: Cross multiply
    49,641.60x = 74,436.80 × 18,460.80
  4. Step 4: Simplify right side
    49,641.60x = 1,374,162,877.44
  5. Step 5: Solve for x
    x = 1,374,162,877.44/49,641.60
  6. Step 6: Final answer
    x = 27,681.68

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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.