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Finding the Fourth Proportional to 48,191.79, 72,285.88 and 12,652.78

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Solution

The fourth proportional to 48,191.79, 72,285.88 and 12,652.78 is: 18,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,191.79 : 72,285.88 = 12,652.78 : x
  2. Step 2: Convert to fraction form
    48,191.79/72,285.88 = 12,652.78/x
  3. Step 3: Cross multiply
    48,191.79x = 72,285.88 × 12,652.78
  4. Step 4: Simplify right side
    48,191.79x = 914,617,504.76
  5. Step 5: Solve for x
    x = 914,617,504.76/48,191.79
  6. Step 6: Final answer
    x = 18,978.70

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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.