Home / 48,079.04-72,099.08-19,980

Finding the Fourth Proportional to 48,079.04, 72,099.08 and 19,980

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Solution

The fourth proportional to 48,079.04, 72,099.08 and 19,980 is: 29,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,079.04 : 72,099.08 = 19,980 : x
  2. Step 2: Convert to fraction form
    48,079.04/72,099.08 = 19,980/x
  3. Step 3: Cross multiply
    48,079.04x = 72,099.08 × 19,980
  4. Step 4: Simplify right side
    48,079.04x = 1,440,539,618.40
  5. Step 5: Solve for x
    x = 1,440,539,618.40/48,079.04
  6. Step 6: Final answer
    x = 29,961.90

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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.