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Finding the Fourth Proportional to 69,435.60, 103,543.68 and 68,804.10

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Solution

The fourth proportional to 69,435.60, 103,543.68 and 68,804.10 is: 102,601.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,435.60 : 103,543.68 = 68,804.10 : x
  2. Step 2: Convert to fraction form
    69,435.60/103,543.68 = 68,804.10/x
  3. Step 3: Cross multiply
    69,435.60x = 103,543.68 × 68,804.10
  4. Step 4: Simplify right side
    69,435.60x = 7,124,229,713.09
  5. Step 5: Solve for x
    x = 7,124,229,713.09/69,435.60
  6. Step 6: Final answer
    x = 102,601.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.