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Finding the Fourth Proportional to 69,074.08, 103,611.13 and 19,154.18

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Solution

The fourth proportional to 69,074.08, 103,611.13 and 19,154.18 is: 28,731.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,074.08 : 103,611.13 = 19,154.18 : x
  2. Step 2: Convert to fraction form
    69,074.08/103,611.13 = 19,154.18/x
  3. Step 3: Cross multiply
    69,074.08x = 103,611.13 × 19,154.18
  4. Step 4: Simplify right side
    69,074.08x = 1,984,586,445.17
  5. Step 5: Solve for x
    x = 1,984,586,445.17/69,074.08
  6. Step 6: Final answer
    x = 28,731.28

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1.5x scale

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.