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Finding the Fourth Proportional to 48,702.60, 72,999.90 and 19,110.60

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Solution

The fourth proportional to 48,702.60, 72,999.90 and 19,110.60 is: 28,644.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,702.60 : 72,999.90 = 19,110.60 : x
  2. Step 2: Convert to fraction form
    48,702.60/72,999.90 = 19,110.60/x
  3. Step 3: Cross multiply
    48,702.60x = 72,999.90 × 19,110.60
  4. Step 4: Simplify right side
    48,702.60x = 1,395,071,888.94
  5. Step 5: Solve for x
    x = 1,395,071,888.94/48,702.60
  6. Step 6: Final answer
    x = 28,644.71

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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.