Home / 48,051.10-72,076.48-12,990.75

Finding the Fourth Proportional to 48,051.10, 72,076.48 and 12,990.75

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Solution

The fourth proportional to 48,051.10, 72,076.48 and 12,990.75 is: 19,486.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,051.10 : 72,076.48 = 12,990.75 : x
  2. Step 2: Convert to fraction form
    48,051.10/72,076.48 = 12,990.75/x
  3. Step 3: Cross multiply
    48,051.10x = 72,076.48 × 12,990.75
  4. Step 4: Simplify right side
    48,051.10x = 936,327,532.56
  5. Step 5: Solve for x
    x = 936,327,532.56/48,051.10
  6. Step 6: Final answer
    x = 19,486.08

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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.