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Finding the Fourth Proportional to 72,356.10, 108,701.02 and 69,366.80

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Solution

The fourth proportional to 72,356.10, 108,701.02 and 69,366.80 is: 104,210.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,356.10 : 108,701.02 = 69,366.80 : x
  2. Step 2: Convert to fraction form
    72,356.10/108,701.02 = 69,366.80/x
  3. Step 3: Cross multiply
    72,356.10x = 108,701.02 × 69,366.80
  4. Step 4: Simplify right side
    72,356.10x = 7,540,241,914.14
  5. Step 5: Solve for x
    x = 7,540,241,914.14/72,356.10
  6. Step 6: Final answer
    x = 104,210.18

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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.