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Finding the Fourth Proportional to 72,848.80, 109,273.20 and 50,730.40

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Solution

The fourth proportional to 72,848.80, 109,273.20 and 50,730.40 is: 76,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,848.80 : 109,273.20 = 50,730.40 : x
  2. Step 2: Convert to fraction form
    72,848.80/109,273.20 = 50,730.40/x
  3. Step 3: Cross multiply
    72,848.80x = 109,273.20 × 50,730.40
  4. Step 4: Simplify right side
    72,848.80x = 5,543,473,145.28
  5. Step 5: Solve for x
    x = 5,543,473,145.28/72,848.80
  6. Step 6: Final answer
    x = 76,095.60

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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.