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Finding the Fourth Proportional to 72,656.10, 100,299.51 and 48,497.40

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Solution

The fourth proportional to 72,656.10, 100,299.51 and 48,497.40 is: 66,949.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,656.10 : 100,299.51 = 48,497.40 : x
  2. Step 2: Convert to fraction form
    72,656.10/100,299.51 = 48,497.40/x
  3. Step 3: Cross multiply
    72,656.10x = 100,299.51 × 48,497.40
  4. Step 4: Simplify right side
    72,656.10x = 4,864,265,456.27
  5. Step 5: Solve for x
    x = 4,864,265,456.27/72,656.10
  6. Step 6: Final answer
    x = 66,949.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.