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Finding the Fourth Proportional to 48,657.60, 72,957.20 and 19,040.16

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Solution

The fourth proportional to 48,657.60, 72,957.20 and 19,040.16 is: 28,548.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,657.60 : 72,957.20 = 19,040.16 : x
  2. Step 2: Convert to fraction form
    48,657.60/72,957.20 = 19,040.16/x
  3. Step 3: Cross multiply
    48,657.60x = 72,957.20 × 19,040.16
  4. Step 4: Simplify right side
    48,657.60x = 1,389,116,761.15
  5. Step 5: Solve for x
    x = 1,389,116,761.15/48,657.60
  6. Step 6: Final answer
    x = 28,548.81

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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.