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Finding the Fourth Proportional to 48,349, 72,555.90 and 20,653.48

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Solution

The fourth proportional to 48,349, 72,555.90 and 20,653.48 is: 30,994.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,349 : 72,555.90 = 20,653.48 : x
  2. Step 2: Convert to fraction form
    48,349/72,555.90 = 20,653.48/x
  3. Step 3: Cross multiply
    48,349x = 72,555.90 × 20,653.48
  4. Step 4: Simplify right side
    48,349x = 1,498,531,829.53
  5. Step 5: Solve for x
    x = 1,498,531,829.53/48,349
  6. Step 6: Final answer
    x = 30,994.06

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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.