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Finding the Fourth Proportional to 69,205.80, 103,808.70 and 62,426.10

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Solution

The fourth proportional to 69,205.80, 103,808.70 and 62,426.10 is: 93,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,205.80 : 103,808.70 = 62,426.10 : x
  2. Step 2: Convert to fraction form
    69,205.80/103,808.70 = 62,426.10/x
  3. Step 3: Cross multiply
    69,205.80x = 103,808.70 × 62,426.10
  4. Step 4: Simplify right side
    69,205.80x = 6,480,372,287.07
  5. Step 5: Solve for x
    x = 6,480,372,287.07/69,205.80
  6. Step 6: Final answer
    x = 93,639.15

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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.