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Finding the Fourth Proportional to 69,503.49, 103,361.10 and 67,289.15

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Solution

The fourth proportional to 69,503.49, 103,361.10 and 67,289.15 is: 100,068.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,503.49 : 103,361.10 = 67,289.15 : x
  2. Step 2: Convert to fraction form
    69,503.49/103,361.10 = 67,289.15/x
  3. Step 3: Cross multiply
    69,503.49x = 103,361.10 × 67,289.15
  4. Step 4: Simplify right side
    69,503.49x = 6,955,080,562.07
  5. Step 5: Solve for x
    x = 6,955,080,562.07/69,503.49
  6. Step 6: Final answer
    x = 100,068.08

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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.