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Finding the Fourth Proportional to 103,621.30, 155,431.95 and 44,446.90

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Solution

The fourth proportional to 103,621.30, 155,431.95 and 44,446.90 is: 66,670.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.30 : 155,431.95 = 44,446.90 : x
  2. Step 2: Convert to fraction form
    103,621.30/155,431.95 = 44,446.90/x
  3. Step 3: Cross multiply
    103,621.30x = 155,431.95 × 44,446.90
  4. Step 4: Simplify right side
    103,621.30x = 6,908,468,338.46
  5. Step 5: Solve for x
    x = 6,908,468,338.46/103,621.30
  6. Step 6: Final answer
    x = 66,670.35

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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.